MCQOPTIONS
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| 1. |
It is six months long day in the northern polar region and six months long night in the southern polar region because: [Railways 1993] |
| A. | earth is revolving around the sun |
| B. | earth is inclined towards its orbital plane |
| C. | earth is rotating |
| D. | none of these |
| Answer» C. earth is rotating | |