MCQOPTIONS
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| 1. |
Variation in duration of day and night is due to: 1. rotation of earth on its axis 2. revolution of earth around the sun 3. inclination of earth at an angle of |
| A. | 1and 2 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 1, 2 and 3 |
| Answer» C. 1 and 3 | |