The fourth chapter explores the elaboration and subsequent extinction of the American attribution of sovereignty to Native American nations. |
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The act gave teeth to a series of treaties designed to protect migratory birds, including the swan family, from extinction. |
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The most recent major extinction occurred 65 million years ago when a meteorite crashed into Earth, leading to the demise of the dinosaurs. |
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With current cloning techniques could mammoths be brought back from extinction? |
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It caused the extinction of mammoths and many other species, leaving a world that was warmer but much less diverse. |
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The blobfish is at risk of extinction from fishing trawlers that drag the ocean floors. |
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The American Buffalo was brought almost to extinction by overzealous hunters. |
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Halting this form of extinction will be a blessing to creation, and hopefully a blessing to you. |
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Shown in cave paintings in France and Spain, these were a favourite quarry of Palaeolithic hunters, and were eventually hunted to extinction. |
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For too long we have regarded the extinction of Neanderthals as a chance historical accident. |
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In 1945 France was a great power that had come within an ace of extinction. |
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The causes of its extinction remain unclear, but it is likely that rats, weasels, and cats played a role in its demise. |
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As for biodiversity, the most important species threatened with extinction today is the human race. |
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This indicates that there existed a short period of radiolarian development before the great extinction at the Permian-Triassic transition. |
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They better understand the process of speciation, adaptation, and extinction. |
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In the six years since Labour came to power we have seen our public services and welfare system eroded almost into extinction. |
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Fur seals, elephant seals, and the great whales were all hunted to the brink of extinction. |
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These whales have been hunted to near extinction, and only about 2,500 exist today. |
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The united front that saved York City from extinction has achieved national recognition with a major footballing prize bestowed on the club. |
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Or, say the liberals, we waste our money on video games and trashy novels while the fine arts totter on the brink of extinction. |
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Saskatchewan also is one of the best places on earth to view rare whooping cranes, magnificent white birds bordering on extinction. |
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But the number of wild animal species began to drop from the early 1980s, with Tibetan antelopes and wild kiangs in danger of extinction. |
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Commons were enclosed, and waste land reclaimed, by landlords or squatters, with consequent extinction of common grazing rights. |
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It is believed that predation by non-native red foxes was the primary reason for the extinction of the dusky pademelon on mainland Australia. |
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A very high proportion of Amazon parrots are threatened with extinction because of their slow rate of reproduction. |
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As our awareness of the extinction crisis has grown, we have taken some ameliorative actions. |
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Of course, some costs to the environment, such as species extinction, are not reparable at any price. |
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Perhaps 10 to 30 percent of Earth's mammal, bird, and amphibian species are facing extinction. |
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The Amur leopard recovery program began in 2001, when the species was on the brink of total extinction. |
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Bold, aggressive, and controversial actions are likely to be requisites to save the island fox from extinction. |
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But the club was only rescued from extinction earlier this year by the new chairman. |
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According to Mylonas, extinction of autochthonous species caused by the introduced species is unusual in terrestrial mollusks. |
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We then calculated the residuals, the difference between each interval's extinction intensity and its lowest smoothed value. |
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The leatherback turtle has survived for more than a hundred million years, but is now facing extinction. |
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Well, if we bring extinction events closer to home, there is our very own omnipresent, continually unfolding, late Holocene extinction event. |
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Many parrots, macaws and cockatoos are also being driven close to extinction by international trade. |
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By coinciding, however, they did result in a distinct drop in diversity and thus in a mass extinction. |
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It has often been regarded, like folk music, as a genuine popular culture, in danger of extinction. |
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The human race comes close to extinction when a huge meteor crashes in the Arizona desert with a life form unlike anything we've ever seen! |
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But the poet's vision darkens apocalyptically in The Lice, which seems written under the shadow of planetary extinction. |
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Dashed upon a bleak, inhospitable and unfortunately uninhabited shore, the five shipwrecked souls were faced with extinction if not rescued. |
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They are mating with the local rare species of white-headed duck producing a mongrel that could force the indigenous breed into extinction. |
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My research focus is on the decline and potential extinction of loggerhead and leatherback sea turtles in the Pacific Ocean. |
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For example, snow partridge and Himalayan monal pheasant are facing local extinction from many valleys. |
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Over centuries they were hunted to the brink of extinction in the big game safaris of southern Africa. |
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It faces imminent extinction resulting from disturbances to its sagebrush habitat, disease, predation, and loss of genetic diversity. |
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Scientists have said cod in particular is nearing extinction and called for a total moratorium. |
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One in five of Britain's wild flower species is threatened with extinction, according to the most detailed analysis to date of British flora. |
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Eventually we dominated and may have caused the extinction of another earlier human species, the Neanderthals. |
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Meanwhile the bocaccio is near extinction, its fate signaling an ongoing crisis in global commercial fisheries. |
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Both bird life and many unique types of trees are threatened with extinction because of the brushtail possum. |
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Fears have been expressed that as many as 100,000 plant species are currently threatened with extinction worldwide. |
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The Tlingit of Alaska know this, and they are tenaciously preserving the remnants of a culture uncomfortably close to extinction. |
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More than half of Madagascar's freshwater fish are threatened with extinction. |
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Their use is believed to have pushed the numbers of porpoises, also bottom feeders, in areas such as the Baltic Sea, to the verge of extinction. |
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Many of the nearly 700 species of indigenous plants are threatened with extinction. |
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By the 1970s, shrimpers in the Gulf of Mexico had fished them nearly to extinction. |
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The result is that some 12 percent of mammal species and 11 percent of birds and plants are threatened with extinction. |
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Species introduced to control one pest have driven other native biota to extinction. |
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Africa's mountain bongo antelopes are teetering on the brink of extinction because of deforestation and poaching. |
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It is known that induction of telomere shortening leads to the extinction of yeast clones similar to a senescent phenotype. |
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Lesser extinction episodes have taken place as well, at timescales of tens of millions of years. |
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It is biogeochemistry that lends substance to the hypothesis that Ediacaran and Cambrian faunas are separated by mass extinction. |
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This means that a very large number of languages are only spoken by a few hundred people and are under threat of extinction. |
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It's a shocking indictment that 40 per cent of our remaining local ecosystems are at risk of extinction. |
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In England the cavalier, once thought to be on the verge of extinction, is the most popular toy breed. |
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The extinction ratio indicates how well the polarizing beam splitter discriminates between two planes of polarization. |
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The water vole, fast heading for extinction in Britain, can still be found at Clifton Ings in York, according to an environmental group. |
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What we are in danger of, he says matter-of-factly, is a self-inflicted wound, a self-inflicted extinction. |
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In Kenya, meanwhile, the bongo antelopes, victims of deforestation and poaching, are teetering on the brink of extinction. |
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Carnivores, species at the top of the food chain, are in danger of a mass extinction that would affect all species within their ecosystems. |
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This is a marvelous opportunity to save this majestic yet misunderstood bird from extinction in Namibia. |
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Any doubts that manners are facing extinction can be dispelled with a peek into school cafeterias. |
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After many decades of debate, the North American end-Pleistocene megafaunal mass extinction remains a lightning rod of controversy. |
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And since the late 1990s, she seems to have been pursuing a single-handed crusade to save the diva from extinction. |
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Scientists define a mass extinction as a period of less than two million years in which at least 75 percent of species go extinct. |
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This is difficult to accept in Europe because our intellectuals were always convinced that modernity brings with itself the extinction of religious faith. |
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Perhaps the possibility should be considered that evolution selects for beings that imagine their own species exempt from natural selection and possible extinction. |
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Both the leatherback and loggerhead turtle could face extinction within 10 to 30 years if international fishing practices are not dramatically altered, he added. |
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Ever since the proposal that the mass extinction resulted from a bolide impact, the nature of mass extinctions has been the subject of much debate. |
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This is why some people believe that the logical conclusion of animal rights is human extinction. |
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Within a few thousand years of human arrival on Australia, all the continent's megafauna were hunted to extinction. |
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Dingoes were originally pack animals and Australia's largest carnivores, and are believed to have caused the extinction of the thylacine and Tasmanian devil on the mainland. |
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Environmentalists were furious, saying that the plan would lead to the mass extinction of the snake population. |
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In doing so, black minstrelsy signified on the white supremacist belief that black degeneracy would ultimately lead to the extinction of the black race. |
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Scientists and conservationists called on Pacific countries Friday to step up efforts to protect leatherback turtles that are on the brink of extinction. |
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Her observation that the traditional art forms face extinction, for lack of adequate support, technological influences and unremunerative returns is true. |
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The Medean world is one out of balance, where over competition leads to mass extinction. |
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But there are still question marks over the future of populations of other species, including blue whales and bowhead whales, both hunted to the verge of extinction. |
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However, Mughal supremacy in India was not established till the reign of Akbar and before that there were times when the Mughals were in danger of extinction. |
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The potential new species strides ahead up the fitness curve, leaving its more poorly-adapted predecessors languishing behind, to the point when they are driven to extinction. |
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One of the defining characteristics of a Medean extinction is the disruption of the carbon cycle. |
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During the most recent mass extinction, 65 million years ago, 17 per cent of all the taxonomic families of life were lost, including the dinosaurs. |
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The extinction occurred at the boundary between the Permian and Triassic periods at a time when all land was concentrated in a supercontinent called Pangea. |
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Further, the news that the kilo is in such imminent danger of extinction will no doubt be seen as a vindication by Brits reluctant to sell their fruit and veg in metric units. |
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In Australia, he predicted with great regret the extinction of the thylacine and called the authorities short-sighted for not protecting red kangaroos. |
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The foundation has worked to protect tigers from extinction in Nepal, rainforests in Sumatra, and endangered sharks. |
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In order to save these languages from extinction and to preserve their vast cultural and literary treasures, Bhasha publishes a magazine called Dhol in 11 tribal languages. |
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To simply hope that the predator-prey relationship will reach some sort of equilibrium without intervention is to sentence these mountain sheep to extinction. |
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Subsequent analyses of the extinction episodes have convinced most experts that the average time between catastrophes varies too greatly to signify anything truly periodic. |
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Your existence contributes to over-population, climate change, and species extinction. |
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The multi-coloured Himalayan monal is an attractive pheasant hunted for its attractive feathers and crest, and is almost on the verge of extinction. |
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By the 1980s, Latvian language and culture were on the verge of extinction, and some drastic measures were needed to galvanise them after independence. |
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The ultimate end of this process is extinction, not evolutionary progress. |
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On the whole, it is an earnest attempt to preserve traditional crafts from extinction and to help skilled craftsmen and weavers, who are living in penury. |
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The study places the Eastern Arctic bowhead whale, Western arctic bowhead whale and the Eastern Hudson Bay beluga whale on the list of species facing imminent extinction. |
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In addition to this most finely resolved binning treatment, we also combined data into 20, 18, and, finally, 15 intervals for analysis of the extinction and origination data. |
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And thanks to oil palm plantations springing up in Africa, chimpanzees are in danger of extinction. |
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Even the Native Americans, who were massacred almost to the point of extinction, escaped the curse of race slavery. |
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Diamond has investigated many different instances of cultural extinction, including the Mayans, Pitcairn Islanders, the Anasazi, Norse Greenlanders and the Vikings. |
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Already the Steller's Sea Cow has been hunted into extinction by humans. |
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Following the extinction of the Permian therapsids due to the end Permian-extinction, most of the large animals that populated Pangea were archosaurs or archosauromorphs. |
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It has been studied comprehensively by McGhee, who argued cogently that bolide impact and presumed climate change were important controls on the pattern of extinction. |
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This event is theorized to have created enormous amounts of dust, which blocked out the sun, possibly for years, and led to the extinction of 75 percent of all living species. |
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The Tasmanian tiger, a dog-like creature christened for its striped pelt, was hunted into extinction because it was seen as a threat to livestock. |
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When the Makahs stopped whaling in the 1920s it was because commercial whalers, harpooning all they could find, had nearly driven the gray whales to extinction. |
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What possible punishment can the Dalai Lama, in this lifetime, inflict on the Chinese as they hasten the extinction of his people? |
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And in just 10 years, hunters in Asia have killed hundreds of thousands of saiga, an Asian antelope, pushing the species to the brink of extinction. |
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The Atlantic recently reported that female pubic hair is on the fast track to extinction. |
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As such, birds were the only dinosaur lineage to survive the mass extinction event. |
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If correct, the presence of a handful of dinosaurs in the early Paleocene would not change the underlying facts of the extinction. |
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New research suggests that the extinction of the woolly mammoth may have been caused by the combined effect of climatic change and human hunting. |
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They are now considered a major factor in the decline and extinction of many vulnerable and endangered native species. |
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All these factors have led to Australia's having the highest mammal extinction rate of any country in the world. |
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Freshwater and terrestrial molluscs appear exceptionally vulnerable to extinction. |
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Many species are at the risk of extinction, some being classified as critically endangered. |
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For example, the earliest known bat dates from about 50 million years ago, only 16 million years after the extinction of the dinosaurs. |
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The earliest undisputed fossils of placentals comes from the early Paleocene, after the extinction of the dinosaurs. |
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For example, the endangered wild water buffalo is most threatened with extinction by genetic pollution from the domestic water buffalo. |
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One hypothesis is that humans hunted large mammals, such as the woolly mammoth, into extinction. |
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Drought, increased intensity and frequency of fire and climbing temperatures are expected to push many rare species towards extinction. |
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The Syrian and North African elephant populations were reduced to extinction, probably due to the demand for ivory in the Classical world. |
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Today they are only maintained by the older generations and are on the verge of extinction. |
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Livestock production is a contributing factor in species extinction, desertification, and habitat destruction. |
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Moreover, he noted that savage races risked extinction more from white European colonialism, than from evolutionary inadequacy. |
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Haeckel divided human beings into ten races, of which the Caucasian was the highest and the primitives were doomed to extinction. |
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The Barbary lion, hunted to extinction in the wild, was a subspieces native to Morocco and is a national emblem. |
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The Arabian ostriches in the Near and Middle East were hunted to extinction by the middle of the 20th century. |
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Further climate changes caused the extinction of the Asian giraffes, while the African giraffes survived and radiated into several new species. |
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It is feared that these new hydroelectric dams could lead to the extinction of many of the fish species that are endemic to the river. |
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Several hydroelectric dams are planned on the river, and these may lead to the extinction of many of the endemics. |
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Most of the plants here are native to the region, and many, such as the Peltogyne mexicana or purple stick tree, are in danger of extinction. |
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Maya royal succession was patrilineal, and royal power only passed to queens when doing otherwise would result in the extinction of the dynasty. |
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Species in danger of extinction include the jaguar, spider monkey and anteater. |
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The congregation came to believe that they faced eventual extinction if they remained there. |
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The company's economic activity in Mauritius largely contributed to the extinction of the dodo, a flightless bird that was endemic to the island. |
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Ivan's murder of his son brought about the extinction of the Rurik Dynasty and the Time of Troubles. |
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The reasons for this extinction are not fully known, but one theory notes that extinction in North America paralleled human arrival. |
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With the modern rise of corporate agribusiness and the decline of localized family farms, many breeds of sheep are in danger of extinction. |
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During the 2001 FMD pandemic in the UK, hundreds of sheep were culled and some rare British breeds were at risk of extinction due to this. |
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Many indigenous populations have undergone a dramatic decline and even extinction, and remain threatened in many parts of the world. |
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The park contains a number of species which are in danger of extinction including the black bear and the puma. |
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However, forests in this state have been historically depleted with species such as holm oak, pine and oyamel in danger of extinction. |
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Bush and Blair stand condemned by their own publics and face imminent political extinction. |
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Many of the bigger species, such as the grey wolf and the brown bear, were hunted to extinction many centuries ago. |
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This has looked at local populations that are vulnerable to the extinction vortex. |
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When beavers make a dam, they cause the local extinction of numerous riverine species that cannot survive in the new lake. |
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Anomie and accidie which were also mentioned are, I fear, surely doomed to extinction. |
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The northern white rhino has been on the brink of extinction for years due to hunting and habitat loss. |
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In effect, Amerindians had no legal ownership to the land but could treat with the Crown for the extinction of their right of occupancy. |
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In a more recent assessment of the extinction risk for zooxanthellate reef-building coral species, Carpenter, et al. |
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Report on efforts to prevent extinction of Kemp's ridley sea turtle through head starting. |
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Copenhagen Airport on Monday announced that this summer it is supporting the Asian elephants, which face extinction. |
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These traders dealt rotgut alcohol and placed such high demands on buffalo robes that the once vast herds were brought to near extinction. |
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Warnings are being given by the wildlife campaigners that cousins of the kangaroo, bettongs and rock-wallabies, are on the verge of extinction. |
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Pat Robertson wants to talk about the extinction of the gays. |
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How might we resurrect a tradition threatened with extinction? |
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Since then, they've been aggressive invaders, driving the Japanese royal bitterling to extinction and threatening other native species. |
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The global appetite for bluefin tuna has destroyed the species, pushing it to the brink of extinction. |
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Microfossils found in rocks deposited during Earth's largest mass extinction may be the spores of very hardy fungi, a new study hints. |
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The Cretaceous ended 65 million years ago, the time of the mass extinction that wiped out dinosaurs and most birds. |
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The megafauna extinction, it's now clear, did not take place all at once, as Lyell and Wallace believed it had. |
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The timing of megafaunal extinction in the late Late Pleistocene on the Japanese archipelago. |
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Buffalos have few natural predators, but the fabled buffalo kills by man and its near extinction are fully explained. |
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The extinction of the traditional fan-base was then hastened further by the Skyjacking of the new Premiership. |
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This impressive mammal seemed on the verge of extinction, a victim of enlightenment and manners and corporate groupspeak. |
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The polecat was nearly driven to extinction in Britain, but hung on in Wales and is now rapidly spreading. |
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This activity likely led to the extinction of the Atlantic population of the once common gray whale. |
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The new technology generated a population explosion of modern humans which is believed to have contributed to the extinction of the Neanderthals. |
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Many hypotheses also seek to explain the regional extinction of mammoths in specific areas. |
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Another hypothesis, said to be the cause of mammoth extinction in Siberia, comes from the idea that many may have drowned. |
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Of the six extinct species, five went extinct in the Quaternary extinction event. |
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During that period, a handful of ranchers gathered remnants of the existing herds to save the species from extinction. |
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It continued to exist until around 30,000 BP, when Neanderthal man faced extinction. |
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Epochal volcanism and climatic changes 20 million years ago forced a mass extinction. |
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If the increasing air mass flow reduces the fuel ratio below certain value, flame extinction occurs. |
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The klipdachs and the klipspringer are the prevalent population, now however threatened with extinction. |
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In 1001, the Danes returned and pillaged Portsmouth and surrounding locations, threatening the English with extinction. |
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Existing patterns of biodiversity have been shaped both by speciation and by extinction. |
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Extinction is not an unusual event, as species regularly appear through speciation and disappear through extinction. |
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Nearly all animal and plant species that have lived on Earth are now extinct, and extinction appears to be the ultimate fate of all species. |
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The role of extinction in evolution is not very well understood and may depend on which type of extinction is considered. |
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Current species are a stage in the process of evolution, with their diversity the product of a long series of speciation and extinction events. |
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The extinction of the dwarf hippos and dwarf elephants has been linked to the earliest arrival of humans on Malta. |
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The arrival of the first humans is correlated with extinction of giant owls and dwarf ground sloths. |
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Of those languages, this means that roughly 6,100 languages are facing a risk of extinction. |
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The risk of its extinction is serious and efforts to revive interest in the language are being implemented by scholars. |
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In the case of the Latin American communities, the danger of extinction is also due to the risk of assimilation by modern Castilian. |
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Even so, such species as the Javan rhinoceros face extinction, with only a handful of the animals remaining in western Java. |
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Native animal populations have been very badly affected, with the extinction of at least 10 species attributed to the spread of foxes. |
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Many species of oaks are under threat of extinction in the wild, largely due to land use changes, livestock grazing and unsustainable harvesting. |
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In a recent survey, 78 wild oak species have been identified as being in danger of extinction, from a global total of over 500 species. |
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The decline of a dynasty or culture could also mean the extinction of its capital city, as occurred at Babylon and Cahokia. |
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In the 13th and 14th century, pirates threatened the Hanseatic routes and nearly brought sea trade to the brink of extinction. |
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The islands' only native terrestrial mammal, the warrah, was hunted to extinction by European settlers. |
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These caves house many species of bats, and efforts are underway to monitor and protect the ten species of bats from extinction. |
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Records of some dialects of Leinster were made by the Irish Folklore Commission and others prior to their extinction. |
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As for the animals, in many parts of Europe most large animals and top predator species have been hunted to extinction. |
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The extinction of the dwarf hippos and dwarf elephants has been linked to the earliest arrival of humans on the islands of the Mediterranean. |
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The orchestra was in danger of extinction for lack of players, and Barbirolli seized the opportunity to help it. |
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Causes for wildlife extinction are habitat destruction and extensive unregulated hunting. |
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Ethiopia has a large number of species listed as critically endangered, endangered, and vulnerable to global extinction. |
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Google launched the Endangered Languages Project aimed at helping preserve languages that are at risk of extinction. |
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Rhodri was the son of Merfyn Frych, who had claimed Gwynedd upon the extinction of Cunedda's male line. |
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The markers are consistent with a mass extinction, or with a massive warming resulting from the release of methane ice. |
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Mass extinctions are often followed by adaptive radiations as existing clades expand to occupy the ecospace emptied by the extinction. |
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Sea otters have about 26,000 to 165,000 hairs per square centimeters of skin, a rich fur for which humans hunted them almost to extinction. |
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Although once near extinction, they have begun to spread again, from remnant populations in California and Alaska. |
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In fact, some species may have been hunted to extinction by early human hunters. |
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They neared extinction at the end of the Paleozoic era, with just six species known from the Permian period. |
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The Kemp's ridley sea turtles were on the brink of extinction in the 1960s with low numbers of 200 nesting individuals. |
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Populations in the Southern Hemisphere are listed as CITES Appendix I, indicating they are threatened with extinction if trade is not halted. |
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The North Atlantic population may have been hunted to extinction in the 18th century. |
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The northern elephant seal was hunted to near extinction in the late 19th century, with only a small population remaining on Guadalupe Island. |
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Both the start and end of the period are marked by major extinction events. |
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The shelled cephalopods called ammonites recovered, diversifying from a single line that survived the Permian extinction. |
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The fish fauna was remarkably uniform, suggesting that very few families survived the Permian extinction. |
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It could, therefore, not be the immediate cause of the observed mass extinction. |
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Some studies suggest that there are at least two periods of extinction towards the end of the Triassic, separated by 12 to 17 million years. |
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Trilobites are rarer than in previous periods, on a steady trend towards extinction, represented only by the proetid group. |
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However, they were a part of another major extinction that happened within the next major time period. |
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No great extinction or burst of diversity separates the Cretaceous from the Jurassic. |
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Mammals and birds which survived the extinction fed on insects, larvae, worms and snails, which in turn fed on dead plant and animal matter. |
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Most hunted whales are now threatened, with some great whale populations exploited to the brink of extinction. |
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The Arctic food chain would be disrupted by the near extinction or migration of polar bears. |
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The arrival of the first humans correlates with the extinction of the dwarf hippos and dwarf elephants. |
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The arrival of the first humans on the island is correlated with the extinction of the Sicilian Hippopotamus and the dwarf elephant. |
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Patterns of extinction and patterns of species migration can also be studied to gain insight into ocean conditions. |
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There was a major extinction of large mammals in Northern areas at the end of the Pleistocene Epoch. |
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The 2006 IUCN Red List names 1,173 fish species that are threatened with extinction. |
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Such commercial extinction does not mean that the species is extinct, merely that it can no longer sustain a fishery. |
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In 1973, RSCN was given the right to issue hunting licenses, giving RSCN an upper hand in preventing extinction. |
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Most species of sturgeon are considered to be at risk of extinction, making them more critically endangered than any other group of species. |
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These would have included the demise of a population locally or ultimately, species extinction. |
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Currently, 1,556 known species in the world have been identified as near extinction or endangered and are under protection by government law. |
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Captive breeding is meant to save species from extinction and so stabilize the population of the species that it will not disappear. |
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The town dialects of Middelburg and Vlissingen are both much closer to Hollandic than the rural variants and on the edge of extinction. |
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However, that house too faced extinction in the male line less than two decades later. |
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Upon the extinction of the Counts of Flanders with the death of Louis II in 1384, Flanders was acquired by the Burgundian, Duke Philip the Bold. |
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The horn of the male saiga, in Eastern practice, is ground as an aphrodisiac, for which it has been hunted nearly to extinction. |
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It is speculated that brown bears were unable to migrate south until the extinction of the much larger Arctodus simus. |
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Unlike most of these species, the brown bear was able to survive the Quaternary extinction event that concluded the ice age. |
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It is likely that humans have caused the extinction and fragmentation of bear populations and their habitats since prehistorical times. |
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Przewalski's horse had reached the brink of extinction but was reintroduced successfully back into the wild. |
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Named the Holocene extinction, the reduction is caused primarily by human impacts, particularly habitat destruction. |
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This dramatic rise in diversity was marked by periodic, massive losses of diversity classified as mass extinction events. |
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It has been argued that the present rate of extinction is sufficient to eliminate most species on the planet Earth within 100 years. |
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Since the rate of extinction has increased, many extant species may become extinct before they are described. |
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Of these, about one eighth of known plant species are threatened with extinction. |
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Ehrlich and Stuart Pimm have noted that human population growth and overconsumption are the main drivers of species extinction. |
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Background extinction rates have not remained constant, although changes are measured over geological time, covering millions of years. |
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For example, there is approximately one extinction estimated per million species years. |
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Although at one time red deer were rare in parts of Europe, they were never close to extinction. |
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In the history of the Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. |
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In addition, Africa has the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna. |
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The new technology generated a population explosion of modern humans which is believed to have led to the extinction of the Neanderthals. |
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However, the Permian extinction at 252 Mya greatly impacted these insects in mass extinction, being the only mass extinction to affect insects. |
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There were three main sources of environmental deterioration which are believed to have had a hand in the extinction event. |
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This led to the extinction of carbonate producers such as brachiopods and corals that relied on dissolved calcite to survive. |
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According to Birdlife International in 2006 in Cuba 29 species of bird are in danger of extinction and two species officially extinct. |
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All volcanic seamounts follow a particular pattern of growth, activity, subsidence and eventual extinction. |
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According to the International Union for Conservation of Nature, the American eel is at very high risk of extinction in the wild. |
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Eruptions or emplacements of LIPs appear to have, in some cases, occurred simultaneously with oceanic anoxic events and extinction events. |
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Several mechanisms are proposed to explain the association of LIPs with extinction events. |
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It occurs when the rate of extinction increases with respect to the rate of speciation. |
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Since the Cambrian explosion five further major mass extinctions have significantly exceeded the background extinction rate. |
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Mass extinctions seem to be a mainly Phanerozoic phenomenon, with extinction rates low before large complex organisms arose. |
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An underlying mechanism appears to be present in the correlation of extinction and origination rates to diversity. |
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Global warming as a cause of mass extinction is supported by several recent studies. |
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After a major extinction event, usually only weedy species survive due to their ability to live in diverse habitats. |
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Generally, biodiversity recovers 5 to 10 million years after the extinction event. |
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It can appear that the extinction occurs at the end of a polarity interval when the rest of that polarity interval was simply eroded away. |
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One cause of the extinction event is speculated to be extended volcanic activity. |
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New dating of the Popigai meteor suggests it may be a cause of the mass extinction. |
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Chinese researchers question this extinction, claiming that modern humans were present in China already 80,000 years ago. |
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It was characterized by a cold and dry climate, the existence of humans in association with the reindeer, and the extinction of the mammoth. |
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Southern leaders feared that Lincoln would stop the expansion of slavery and put it on a course toward extinction. |
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In most cases, if one species is removed from an ecosystem, other species will most likely be affected, up to the point of extinction. |
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They claim that about one third of open ocean sharks and rays are under threat of extinction. |
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Its status on the red list is that it is globally endangered, meaning it is near extinction. |
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All three species of manatee are listed by the World Conservation Union as vulnerable to extinction. |
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Overall, it is expected that climate change will result in the extinction of many species and reduced diversity of ecosystems. |
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Dead zones are reversible, though the extinction of organisms that are lost due to its appearance is not. |
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Wingate was captivated by this discovery and became dedicated to making sure the cahow was not doomed to extinction. |
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The Calidrid wader, a critically endangered Red-breasted goose, and Greenland's White-fronted goose are faced with extinction. |
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It is believed that a cataclysmic impact caused the extinction of the dinosaurs. |
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They will go the way of the vast flocks of the Passenger Pigeon and the Carolina Parakeet which were reduced to extinction in 100 years. |
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King was later said to have been within a sneeze or a jolt of extinction. |
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Maximum likelihood inference of geographic range evolution by dispersal, local extinction, and cladogenesis. |
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Farmers are set to help in the battle to prevent the extinction of birds including the tree sparrow and corn bunting. |
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