Question

how have human actions polluted air ​

Answer 1

human actions polluted air by purchasing more no of vehicles ...because from a vehicle there a lots o harmful gases that are being released like carbonmonoxide and etc..these mix up with the air ...when we breath in that polluted air goes inside our body and mixes up in our body and causes some diseases..

OR

because of the harmful gases present in air can cause skin diseases when your skin is exposed to the polluted air

Answer 2

Human activities pollute air by following ways :

. Cigarette smokers pullutes the air a lot by releasing smkoe.

. Tbe exaust emission from vechiles contain poisonous gases that pollute the air .

. Burning of coals in huge amount in thermal powr plants release smoke and fly ash .

HOPE IT WILL HELP U !!