1.
Trichodermaharzianum has proved a useful microorganism for

2.
Soil chemistry is considered a(n) __________ factor

3.
Which group of vertebrates comprises the highest number of endangered species?

4.
Total amount of living material at the various trophic levels of a food chain is depicted by pyramids of

5.
Energy resources derived from natural organic materials are called

6.
Any unfavorable alteration of the environment may be called as

7.
Which book written by Rachel Carson resulted in banning DDT in USA?

8.
Air pollution can be of

9.
What is an Incinerator?

10.
_________ is the study that deals with the interaction of organisms with their environment.

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