Transport of pollutants involves air movement, or wind.

Resuspension is the opposite of deposition. The solid object (the ground, a wall, etc.) that can or will hold the pollutant gas molecules or aerosol particles does not need to be stationary--particles could collide and stick to a moving vehicle (deposition occurs) or be dislodged from the surface of the vehicle as air rushes past the moving vehicle (resuspension occurs).

Dispersion can involve air movement, such as the wind.

When pollutants are emitted into clean air, the clean and polluted air mix, diluting the contaminants. Over time, air movement (such as from wind) can dilute the pollution enough so that it will not be harmful to life.

When gases react, other substances are produced. The original pollutant(s) then disappear. It may be that the products of the reaction are also pollutants, so a chemical reaction could be a source of one or more pollutants while it is a sink for one or more other pollutants.

Solid aerosol particles eventually settle out of the atmosphere due to gravity. This category also includes the impaction of aerosols and gas molecules onto solid surfaces near the ground (the particles or gas molecules collide with the solid object and stick to the object). This is known as "deposition".