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  1. Days and night 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.
    1. Only 1 is correct
    2. 1 and 2 is correct
    3. 2 and 3 are correct
    4. All are correct
Correct Option: A

NA


Comments

  1. SANTOSH KUMAR

    June 21, 2018 Reply

    Due to rotation of the Earth (a sphere) on its axis, only half the planet receives sunlight. This half experiences daytime while the other one experiences night.

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