Variations in the length of daytime and nighttime from season to season are due to
Athe earth's rotation on its axis
Bthe earth's revolution round the sun in an elliptical manner
Clatitudinal position of the place
Drevolution of the earth on a tilted axis
Answer & Solution
Correct answer: D. revolution of the earth on a tilted axis
UPSC CSE Prelims 2013 (GS-I, Set A), Q.14. Official answer key: D.
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