Explain in short : Pollution of troposphere done by hydrocarbon.
Hydrocarbons are composed of hydrogen and carbon only and are formed by incomplete combustion of fuel used in automobiles.
Hydrocarbons are carcinogenic, i.e., they cause cancer. They harm plants by causing ageing, breakdown of tissues and shedding of leaves, flowers and twigs.
What is Eutrophication ?
List gases which are responsible for greenhouse effect.
Give a brief explanation about about the international standards of drinking water.
Mention the components of photochemical song and its effects.
Have you ever observed any water pollution in your area? What measures would you suggest to control it?