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UPSC Prelims 1991Question 30Geography

Seasons on the Earth are caused due to

Options

  1. (a)The elliptical orbit of the Earth
  2. (b)Alteration/change in the speed of revolution of the Earth
  3. (c)Inclination of the Earth on its axis of rotation
  4. (d)Differences in the amount of energy received from the Sun

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