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Discussion :: Atmosphere

  1. The radiation that heats earth's atmosphere comes from the

  2. A.

     Sun

    B.

     Earth

    C.

     Ionosphere

    D.

     Sun and earth

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    Answer : Option B

    Explanation :

    Once in the Earth's atmosphere, clouds and the surface absorb the solar energy. The ground heats up and re-emits energy as longwave radiation in the form of infrared rays. Earth emits longwave radiation because Earth is cooler than the sun and has less energy available to give off.


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