New Enroll here to Join NaBFID Analyst Into Class on May 6

    Question

    Which gas is essential for respiration in

    humans?
    A Carbon dioxide Correct Answer Incorrect Answer
    B Oxygen Correct Answer Incorrect Answer
    C Nitrogen Correct Answer Incorrect Answer
    D Hydrogen Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    Humans need oxygen for cellular respiration, which provides energy to cells.

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