

MCQOPTIONS
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1. |
%_Which of the following constituents of the atmosphere are important from the climatic point of view ? 1. Nitrogen2. Oxygen3. Carbon dioxide_% |
A. | 1 and 2 |
B. | 2 and 3 |
C. | 1, 2 and 3 |
D. | Only 3 |
Answer» E. | |