| These chemicals undergo reactions in the atmosphere to form sulfuric acid and nitric acid, falling to the earth as acid precipitation. |
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| Although the pollutants may be deposited in dry form or in rain, snow, or fog, the deposition phenomenon is often called acid rain or acid precipitation. |
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| Acid rain and acid precipitation are common terms used to describe wet deposition, while acid deposition encompasses both dry and wet acidic substances. |
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| Current research has shown an increase in soil acidification through anthropogenic effects including acid precipitation and nitrification of ammoniacal fertilizers. |
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| Together, wet and dry deposition of acidic substances is known as acid precipitation. |
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| Alternatively, water bodies can become more acidic over the long term from ongoing exposure to acid precipitation. |
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| In turn, nitrogen oxides and sulphur oxides, both by-products of burning fossil fuels, fall as acid precipitation. |
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| Soils are not equal in their vulnerability or resistance to acid precipitation. |
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| Smog drifts with the wind, and acid precipitation can fall far from the source of pollution. |
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| Smog, acid precipitation and particulates will likely worsen as a result of a warmer climate. |
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| Areas where there is granite bedrock, or other rocks low in alkaline minerals are especially sensitive to damage by acid precipitation. |
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| Low pH from acid precipitation and runoff is a continuing threat to the Aurora Trout. |
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| In turn, NOx and SOx, both by-products of the combustion of fossil fuels, combine with water and fall as acid precipitation. |
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| These ground-level ozone precursors also contribute to acid precipitation, dry deposition and photochemical smog. |
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| The high sulfate values of the rain in the northeastern United States reflect the acid precipitation conditions of this region. |
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| These rivers are generally of low productivity and are negatively impacted by acid precipitation. |
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| Alternatively, acid precipitation can damage the surfaces of leaves and needles. |
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| Summary: Report presents an evaluation of the effects on waterfowl due to ecological changes in aquatic ecosystems associated with acid precipitation. |
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| The lignin is isolated through acid precipitation of black liquor which produces unsulphonated lignin. |
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| Casein of skimmed milk was removed by acid precipitation and the heat coagulable protein by percholoric acid. |
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| Several measures are needed to ensure the adequate consideration of climate change, acid precipitation and smog in the environmental assessment of all projects. |
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| Like wet sponges that can no longer soak up water, parts of the Adirondacks are becoming saturated with nitrogen and thus incapable of buffering waterways from acid precipitation, the report suggests. |
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| Rivers of SFAs 20 and 21 are generally organic-acid stained, of lower productivity, and, when combined with acid precipitation can result in acidic conditions toxic to salmon. |
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| Water bodies can experience short-term but dramatic acidification, such as when acid precipitation in the form of snow is suddenly released into the water system during the spring melt. |
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| Despite legislation to curb acid precipitation, it is predicted that we will continue to lose the fish, shellfish, and amphibian communities of thousands of small lakes in eastern Canada. |
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| Acid precipitation has become a widespread and increasing problem in several countries in Europe and North America. |
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