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  1. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

    2. A.

     carbon
    B.

     hydrogen
    C.

     oxygen
    D.

     nitrogen

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    Answer : Option C

    Explanation :

    The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is Oxygen.

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