At high altitudes in an unpressurized cabin, pilots and passengers will eventually fall unconscious from lack of oxygen, or worse. |
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The rest of the flight is done at altitudes that those missiles cannot reach. |
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Well-trained, acclimatized troops must be available to replace those at higher altitudes. |
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Stingers can shoot down aircraft, including civilian jetliners, flying at low altitudes. |
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Do airdrops from low to high altitudes at night and under adverse conditions. |
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The initial reintroductions of river otters at high altitudes didn't seem to take. |
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There are also a large number of birds that are spotted at the higher altitudes so the climb is well worth the effort. |
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The famous seven hills of Rome were healthy because mosquitoes, the vectors of malaria, only fly at low altitudes. |
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I had been to the Himalayas before but I'd never experienced high altitudes. |
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The expedition in March will see the duo facing altitudes of up to 14,000 ft and temperatures as low as minus five. |
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During the debrief, everyone claimed to have been at the prescribed altitudes and positions. |
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In its upper reaches, climbers are at heights equal to the cruising altitudes for passenger jets. |
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There are plenty of beautiful mountains and stunning views to be found at much lower altitudes. |
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Apparently, the altimeters built into some Casio watches can be modified to detonate bombs at certain altitudes. |
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From high altitudes they can locate missile sites and protect troops on the ground if called to do so. |
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At high altitudes, the thin air makes it hard to breathe unless the cabin is pressurized. |
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From my experience, this airspeed holds true in a wide range of temperatures and altitudes. |
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Flights will take off from the U.S. and will reach altitudes of more than 62 miles. |
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During the trek she will be walking at altitudes of up to 4, 000m and will spend two days acclimatising. |
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The pilot said it was a rare day because the air was flowing in different directions between altitudes. |
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Their goal is to fly to the highest altitudes that the sky and the human spirit can offer. |
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Therefore, the airplane may not be controllable at lower altitudes and airspeeds. |
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Great care is taken to acclimatise trekkers to increasing altitudes to avoid problems with altitude sickness. |
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It's been shown that if you keep returning to high altitudes, the effect of altitude sickness slowly reduces brain tissue volume. |
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Static information such as semi-major axis of ellipse, apogee and perigee altitudes, and anomalistic and nodal periods of satellite orbits. |
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The pilot wears a pressure suit and uses the onboard liquid oxygen system for breathing at high altitudes. |
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The rapid ascent to high altitudes strained the silk beyond the tolerance limit. |
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Don't worry about shutting off the fuel and mags on the inoperative engine at these low altitudes. |
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In the mid-range altitudes the farmer can grow millet and teff, another variety of wheat. |
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At lower altitudes, there are several tree species such as hollies, Lobelius maple, manna ashes and cornel trees. |
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Because of high-density altitudes and the severe climate in Afghanistan, no towed artillery or self-propelled artillery was shipped into theater. |
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Various different temperatures and wind interactions at different altitudes can cause a rotating updraft called a mesocyclone. |
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The A109M can carry out various missions and operations in hot temperatures and high altitudes. |
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A trough is an elongated area of low atmospheric pressure that can occur either at the Earth's surface or at higher altitudes. |
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Extreme storms began in June and hit Peru's high country with bitter cold, high winds, heavy snow and torrential rain at lower altitudes. |
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Pakistan troops train by bivouacking at high altitudes and conducting routine administrative activities and route marches. |
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In the mountains, lots of fluid helps your body adjust to changing altitudes and prevents associated sicknesses, headaches, and pulmonary edema. |
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The latter, which replaces it in the more northerly regions and at higher altitudes, can be termed mountain cranberry, or foxberry. |
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Acute mountain sickness can be acquired at altitudes greater than 5000 feet above sea level, so you need to be aware of its symptoms. |
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This is known as acute mountain sickness, and usually resolves itself after 2 or 3 days at medium altitudes. |
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Acute mountain sickness occurs in travelers making rapid ascents to high altitudes. |
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For a few people, painful episodes may occur if they fly in unpressurized planes at high altitudes. |
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The Athabasca, fed by glacier melt and snowmelt at high altitudes, does not peak until July. |
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It will be difficult to pump a gasoline with a high Vapour Pressure without vapour locks resulting at high altitudes or at high temperatures. |
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People love to jump from high altitudes in New Zealand, properly protected, of course, and it's not just bungee jumping that's popular here. |
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At lower altitudes, the national park offers many safe trails for exploration and a visitor centre. |
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At somewhat lower altitudes, the villages among which I lived for the better part of two years were certainly the habitations of tribal people. |
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One problem you will encounter at high altitudes is an excess of ultraviolet light, which results in atmospheric haze. |
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The plant is easy to propagate, and tolerates poor soil, high altitudes, and harsh climates. |
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It loiters subsonically at very high altitudes over the region of interest for extended periods of time without refueling. |
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Flying in very high altitudes does weird things to him and can easily lead to an MS relapse. |
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The long span, short chord, NLF wing is in its element at tall altitudes and manages to deliver good cruise two miles above the sea. |
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High, tropical cirrus clouds are made up of tiny ice crystals that float at altitudes from 20,000 feet to 60,000 feet. |
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Wispy cirrus clouds are the only ones that form naturally at the high altitudes where jets cruise. |
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Working from a light airplane, where imaging altitudes are higher, requires a larger detector. |
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Conversely, only 5 percent of the fatalities resulted from accidents that occurred at cruising altitudes. |
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This multi-channel infrared radiometer will measure a wide range of infrared light emitted by the atmosphere at several altitudes. |
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Terrain and unpredictable weather conditions affect communications at high altitudes. |
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Thermal inversions were identified directly by comparison of temperature readings at different altitudes. |
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Planes burn less fuel at higher altitudes, so pilots often fly at higher altitudes on long flights. |
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The aircraft flies at altitudes high enough that there is no acoustic footprint. |
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A fully automatic rocket-assisted ejection seat allows escape at all altitudes and speeds within the aircraft's flight envelope. |
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Horses, and at high altitudes, yaks, are used instead of porters to carry loads. |
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The British Royal Air Force needed a new type of pen, one that would not leak at higher altitudes in fighter planes as the fountain pen did. |
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The lucky ones only lost their fingers and toes to frostbite, since air is much colder at higher altitudes. |
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The area is also home to many beech forests and at higher altitudes there are even alpine roses and edelweiss. |
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The basalt flows and gravel deposits were lifted to high altitudes by continuing upward tectonics. |
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Electrojets are Hall currents carried primarily by electrons at altitudes from 100 to 150 km. |
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We had our fighter planes at several altitudes but met no enemy aircraft. |
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Although some ultraviolet radiation passes through his level to be absorbed by ozone in the stratosphere, the most harmful radiation is absorbed at altitudes above 80 km. |
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The primary objective of Helios' recent checkout flight was to expand the flight envelope of the aircraft and verify proper operation of aircraft systems at high altitudes. |
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The Mediterranean stone pine, P. pinea, grows at quite low altitudes, as anyone familiar with the landscapes of Provence, Italy, and the Middle East will be aware. |
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They hope to complete the trek in five days, but it presents problems because they will be walking at altitudes of up to 14,000 ft, where the air is thin. |
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Aeromedical physicians found that blood pooled in the lower body at high altitudes and thus was not forced back toward the heart and recirculated to the head. |
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Eventually they reached for the skies and achieved dizzying altitudes. |
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Polar mesospheric clouds are thin layers of nanometer-sized ice particles that occur at altitudes between 82 and 87 kilometers in the high-latitude summer. |
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Air at very high altitude smells completely different to lower altitudes. |
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All distances are in nautical miles and altitudes are mean sea level. |
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In addition to tracking birds, the radar was used on 113 occasions to track weather balloons in order to determine wind direction and speed at different altitudes. |
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The reduced noise will result not only from the distance of the aircraft above the ground but from the thinness of the atmosphere at such extreme altitudes. |
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Temperate rain forests are common at lower altitudes, but high altitudes lead to stunted trees, and eventually no trees at all above the treeline. |
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Alpine plants are those that are naturally found in high altitudes. |
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He likes death-wish powerboating, ballooning at stratospheric altitudes and showboating for the cameras in fancy dress with scantily-clad hired women. |
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Flight altitudes vary from one country to the next as well as the no-fly zones declared for military reasons or the equipment used to track aircraft. |
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The area encompasses zones of subarctic mountain birch forest in the lowlands, heather and grassland higher up, and mountainous alpine terrain at the highest altitudes. |
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How can humans tolerate extreme oxygen deprivation at very high altitudes? |
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It's just that a lot of marathoners come from Kenya and Ethiopia, it is assumed that it must be due to high altitudes. |
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Note that our folds have trisected the right angles at A and B, and produced the three altitudes of the equilateral triangle also. |
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Condensation trails, which are also known as contrails, are formed when airplanes fly at high altitudes, where the air is extremely cold. |
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The 2D contour map shows the distribution of altitudes in meters along the study area. |
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Overhead an unmanned drone,, armed with missiles, hummed non-stop, sometimes at altitudes so high it was invisible. |
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Without pressurisation, at very high altitudes it can lead to coma and possible death. |
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Turbulent mixing, evidenced by alto-cumulus castellanus cloud over France, also took place en route and carried dust to high altitudes. |
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Many of the higher fells are rocky, while moorland predominates at lower altitudes. |
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This climate is also common in Northern Norway but there usually in lower altitudes, all the way down to sea level. |
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Since the stone uses light polarization, it works the best when the sun is at lower altitudes, or closer to the horizon. |
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The wind blows faster at higher altitudes because of the reduced influence of drag. |
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Red deer in Europe generally spend their winters at lower altitudes in more wooded terrain. |
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In much of southern Europe, such as southern France and northern Italy, it is found in either low lying wetlands or at high altitudes. |
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Section Momi is found in east and central Asia and the Himalaya, generally at low to moderate altitudes. |
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The Sierra Nevada and the Cascade Range reach similar altitudes as the Rocky Mountains, but are significantly smaller. |
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Atmospheric tides are negligible at ground level and aviation altitudes, masked by weather's much more important effects. |
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The ground-based wind profilers willmeasure windspeed and direction at altitudes up to 10 miles. |
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This demonstrated a new way to probe the storms at low altitudes that human pilots seldom dare. |
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As a result, South American sea lions have been foraging at higher tropical altitudes than they did prior to human exploitation. |
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Hypoxia can occur throughout the water column and also at high altitudes as well as near sediments on the bottom. |
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Rare instances of this climate can be found in some coastal locations in the North Atlantic and at high altitudes in Hawaii. |
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Its important to note though that Austria in general does not get very cold in winter but rather cool in summer at higher altitudes. |
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This climate is also common in Northern Norway, but there usually in lower altitudes, all the way down to sea level. |
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One of the first observed environmental effects is that puberty occurs later in children raised at higher altitudes. |
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Subtropical evergreen forests resembling those of temperate climates flourish in the higher altitudes. |
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Snow falls in New Zealand's South Island and at higher altitudes in the North Island. |
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It is a prolific and abundant plant in the moorlands of Great Britain, where it is limited to altitudes of below 600 metres. |
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At lower altitudes, the landscape is characterised by pasture and meadows enclosed by dry stone walls. |
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Already orbiting at altitudes unimaginable a few short years ago, interest rates moved even higher last week and threatened to shoot the moon. |
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Acute mountain sickness may be caused by abnormal regulation of brain and spinal fluid volume in response to low oxygen at high altitudes. |
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The engine performed well and completed multiple aeromechanical test points at various altitudes during the five hour, 30 minute first flight. |
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This week's tests continued to evaluate flying qualities in different aircraft configurations at various altitudes and airspeeds. |
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This especially is true in the mountains, where such species do not persist over winter but must recolonize every year from lower altitudes. |
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At typical airliner altitudes, the speed of sound is about 1,060 kilometers per hour. |
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The locations and altitudes of spillways largely determined the depth of the lake, Leverington explains. |
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The temperature entering the nozzle may be as low as sea level ambient for a fan nozzle in the cold air at cruise altitudes. |
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At more modest altitudes, flying faster compresses the air at the front of the engine, and this greatly heats the air. |
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Avgas has a higher octane rating than automotive gasoline to allow higher compression ratios, power output and efficiency at higher altitudes. |
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The high pressure ratio allows the engine to provide high thrust at very high speeds and altitudes. |
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In early 1942, prisoners at Dachau were used by Rascher in experiments to perfect ejection seats at high altitudes. |
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However, they will grow at lower altitudes, and are being preserved within Brodick Country Park. |
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Gas turbine engines operate efficiently at much higher altitudes, are more reliable than piston engines, and produce less vibration and noise. |
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The mountainous north is colder and receives snowfall at higher altitudes of Himalayan ranges. |
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In general, at higher altitudes, the temperatures decrease and precipitation increases. |
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With a primary air defense role, emphasis was placed on the ability to intercept strategic bombers flying at high altitudes. |
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Within these broad biomes are more specific habitats with varying climate types, temperature regimes, soils, altitudes and vegetation types. |
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This allows them to operate at arbitrary altitudes and in space. |
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The jet engine replaced the piston or reciprocating engine that had powered propeller planes, enabling planes to fly at much higher altitudes and at greater speeds. |
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By mental navigation checks, a pilot or a navigator estimates tracks, distances, and altitudes which then will help him or her avoid gross navigation errors. |
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The highest altitudes of the Carpathians occur where they are widest. |
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Data uploads and downloads were demonstrated, and the results were confirmed with the aircraft operating at a variety of altitudes, airspeeds, and configurations. |
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An exception to this type of climate and vegetation is the mountain areas in the northern region, where high altitudes lead to milder temperatures and drier landscape. |
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Tropical cyclones are areas of relatively low pressure in the troposphere, with the largest pressure perturbations occurring at low altitudes near the surface. |
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At some altitudes, the Bf 109 could outclimb the British fighter. |
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From hydrostatic balance, the warm core translates to lower pressure at the center at all altitudes, with the maximum pressure drop located at the surface. |
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A 'hot and high' rating option for Middle Eastern customers Qatar Airways, Emirates, and Etihad Airways keep its thrust available at higher temperatures and altitudes. |
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The air at high altitudes at the top of mountains is rarefied. |
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A side effect is that passengers experience some discomfort as the cabin pressure changes during ascent and descent to the majority of airports, which are at low altitudes. |
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At these higher altitudes, the plants tend to form isolated cushions. |
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The human body's ability to adapt to different environmental stresses is remarkable, allowing humans to acclimatize to a wide variety of temperatures, humidity, and altitudes. |
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The plants that grow at the highest altitudes have adapted to conditions by specialization such as growing in rock screes that give protection from winds. |
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First, BASE jumps are made from lower altitudes than skydives. |
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At higher altitudes you need to breathe your horse more often. |
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The people living there are gardeners and pig husbanders who know and use many of the species of plant found between altitudes of 1200 and 2400 metres. |
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Light gas balloons are predominant in scientific applications, as they are capable of reaching much higher altitudes for much longer periods of time. |
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The rare woodland caribou have the most restricted range living at higher altitudes in the subalpine meadows and alpine tundra areas of some of the mountain ranges. |
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The mountainous regions themselves are also vulnerable, with a rich range of plants not found at other altitudes, and experience some pressure from visitors and grazing. |
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These aircraft, which can carry five to six people, fly at the same altitudes as regular commercial jets and could congest the air space near cities. |
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Both otter and frog seem to be extending their ranges to higher altitudes. |
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Section Grandis is found in western North America to Mexico, Guatemala, Honduras and El Salvador, in lowlands in the north, moderate altitudes in south. |
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Some parts of the spectrum can be observed from the Earth's surface, while other parts are only observable from either high altitudes or outside the Earth's atmosphere. |
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Section Oiamel is found in central Mexico at high altitudes. |
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