Air Quality Control: Formation And Sources, Dis... Direct

Air pollutants are categorized by how they enter the atmosphere:

Sources are generally divided into human-made (anthropogenic) and natural categories: : Air Quality Control: Formation and Sources, Dis...

) from power plants, and from construction or wildfires. Air pollutants are categorized by how they enter

: These form in the atmosphere through chemical reactions between primary pollutants and other atmospheric components, often catalyzed by sunlight. A prominent example is Ground-level Ozone ( O3cap O sub 3 ) , or smog, which forms when nitrogen oxides ( NOxcap N cap O sub x Air Quality Control: Formation and Sources, Dis...