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    Which of the following is not a greenhouse gas?
    Question

    Which of the following is not a greenhouse gas?   

    A.

    CO₂   

    B.

    CH₄   

    C.

    O₂   

    D.

    N₂O

    Correct option is C


    Answer: (c) O₂
    · Explanation: Oxygen is not a greenhouse gas.
    · (a) CO₂, (b) CH₄, (d) N₂O – All trap heat in the atmosphere.

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