Air pollution

Air pollution is the introduction of chemicalsparticulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere.
The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet EarthStratospheric ozone depletiondue to air pollution has long been recognized as a threat to human health as well as to the Earth’s ecosystems.
Indoor air pollution and urban air quality are listed as two of the world’s worst pollution problems in the 2008 Blacksmith Institute World’s Worst Polluted Places report.

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