The concept of
air pollution is the presence of foreign substances present in the air or important changes in atmospheric composition adversely affect human health, animals and other ecosystem .
substance polluting the air environment means substances that its presence in the atmosphere to cause adverse effects on human health, growth and development of plants and animals ...
+ Pollutants Primary: The intrusion of contaminants into the environment directly from stationary sources: SO2, CO2, CO, dust ...
+ secondary pollutant: A substance that penetrates into the environment through the reaction between pollutants primary and normal response of the atmosphere: SO2 + SO3 produced from O2; H2SO4 born: SO2 + O2 + H2O ...
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