Topic 7 Air

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atmospheric conditions in which air above is warmer than the air below

condition in which air contains harmful substances

condition in which the air contains substances harmful to living things

air pollution over urban areas that reduces visivility

condition of buildings with particularly poor air quality

pollution put directly into the air by human activity

Highly acidic rain, sleet, or snow that results from the release of oxides of sulfur and nitrogen into the air from burning fossil fuels

sudden influx of acidic snows rush into lakes and streams, killing large numbers of fish and amphibians and the offspring of others