MCQOPTIONS
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MCQOPTIONS
| 1. |
Residence time of methane in the atmosphere is |
| A. | 3 - 7 days |
| B. | 2 -3 days |
| C. | 3 - 7 years |
| D. | 2 - 3 years |
| Answer» D. 2 - 3 years | |