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  1. The thickness of biosphere is

    2. A.
    8-10 km above the earth's surface
    B.
    5-8 km above the earth's surface
    C.
    5-10 km above the earth's surface
    D.
    10-12 km above the earth's surface

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    Answer : Option A

    Explanation :

    No answer description available for this question.

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