| Consider the following. |
| 1. Photosynthesis |
| 2. Respiration |
| 3. Decay of organic matter |
| 4. Volcanic action |
| Which of the above add carbon dioxide to the carbon cycle on Earth? |
A) 1 and 4
B) 2 and 3
C) 2, 3 and 4
D) All of these
Correct Answer: C
Solution :
Exp. [c] Photosynthesis does not add to carbon cycle.
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