

MCQOPTIONS
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1. |
Days and nights are caused by : 1. rotation of the earth on its axis 2. revolution of the earth around the sun 3. inclination of the earth's axis |
A. | only 1 is correct |
B. | 1 and 2 are correct |
C. | 2 and 3 are correct |
D. | all are correct |
Answer» B. 1 and 2 are correct | |