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  1. Atmospheric pressure exerted on earth is due to

    2. A.

     Gravitational pull
    B.

     Rotation of earth
    C.

     Revolution of earth
    D.

     Uneven heating of earth

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    Answer : Option A

    Explanation :

    Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface, and is a function of the mass of the planet, the radius of the surface, and the amount and composition of the gases and their vertical distribution in the atmosphere.

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