Explain in short: Pollution of the troposphere caused by hydrocarbons.

(N/A) Hydrocarbons are composed of hydrogen and carbon atoms and are primarily released into the atmosphere through the incomplete combustion of fuels used in automobiles.
Hydrocarbons are carcinogenic,meaning they have the potential to cause cancer.
They cause significant harm to plants by inducing premature ageing,the breakdown of plant tissues,and the shedding of leaves,flowers,and twigs.