what is air pollution
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Particulates created from gaseous primary pollutants and compounds in photochemical smog. Smog is a kind of air pollution. Classic smog results from large amounts of coal burning in an area caused by a mixture of smoke and sulfur dioxide.
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Air pollution is the pollution of air by smoke and harmful gases, mainly oxides of carbon, sulphur, and nitrogen. Many of the world's large cities today have bad air quality. ... Air pollution has been a danger to human health and Earth's many ecosystems for a long time.
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