MCQOPTIONS
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| 1. |
Troposphere is the portion of atmosphere |
| A. | nearest to ground |
| B. | between 50 to 90 km above ground |
| C. | between 110 to 220 km above ground |
| D. | between 250 to 350 km above ground |
| Answer» B. between 50 to 90 km above ground | |