A) Plastic
B) Organochlorine pesticides
C) Heavymetals
D) Domestic sewage
Correct Answer: A
Solution :
Pollutants are classified two types: (i) Biodegradable pollutants are those that can be decomposed or degrades by microbes. They become a part of biogeochemical cycle and give back rapid turn over. e.g. domestic sewage, heavy metals. (ii) Non-biodegradable pollutants are those that cannot be decomposed by microbes and accumulate in the environment causing pollution. e.g. plastic and pesticides like organo chlorides (strong liphilic and non- biodegradable nature).
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