pollution
primary pollution
A lot of substances are not air pollutant. You must specify which kind of substance do you refer as a probable air pollutant.
yes, when it is released in large amounts than the normal natural percentage in air
Pollutant
pollen, ash from fire and ash from fire.
no
"lead" is the air pollutant that decreased most in 1970 to 1991.
Ozone is considered to be the most common air pollutant in the United States.
Do you mean... natural Primary pollutant in the air and all the thick particulates.
Rain and snow remove dust, pollen, smoke and other pollutants from the air by weighing them down. The pollutants are then pressed into trees and other things until rain once again washes them away.
secondary pollutant. deals with oxygen in air