21. |
Fossil Fuels are
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Answer:
Option (b) |
22. |
Moral principles that try to define our responsibility towards the environment are
known as
|
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Answer:
Option (a) |
23. |
The scientific study of human population is known as
|
||||||||
Answer:
Option (b) |
24. |
Environmental degradation is due to
|
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Answer:
Option (d) |
25. |
Chernobyl disaster is related to
|
||||||||
Answer:
Option (a) |
26. |
BOD stands for
|
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Answer:
Option (a) |
27. |
Detritus food chain starts from
|
||||||||
Answer:
Option (a) |
28. |
Which of the following gases has the maximum contribution to enhanced green house effect
|
||||||||
Answer:
Option (c) |
29. |
In ecological pyramids, pyramid of energy is ___________.
|
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Answer:
Option (c) |
30. |
The range of temperature variation in mesosphere is _____
|
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Answer:
Option (b) |