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Answer 1

D question
2nd one
a. air pollutants=
Ozone (O3) – A free radical of oxygen (smog).
Particulate matter – Sooty particles that are most toxic when they are small (<10 microns).
Sulfur dioxide/sulfuric acid – Key component of acid rain.Carbon monoxide – Product of incomplete combustion.
Nitrogen oxides – Common pollutants from burning of fossil fuels.

You can choose any 2 examples of your choice. 



b. water pollutants=
Detergents
.Disinfection by-products found in chemically disinfected drinking water, such as chloroform.
Food processing waste, which can include oxygen-demanding substances, fats and grease.
Insecticides and herbicides, a huge range of organohalides and other chemical compounds.

You can choose of your choice any 2.

c. greenhouse gases=
Water vapor (H. 2O
Carbon dioxide (CO. ...
Methane (CH. ...
Nitrous oxide (N. 2O)Ozone (O. ...
Chlorofluorocarbons (CFCs)
Hydrofluorocarbons (incl. HCFCs and HFCs)









I know the answers only this much. 
Sorry for not giving other answers.......