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UPSC Ecology And Environment Ecology and Environment Question Bank Ecology And Environment

  • question_answer
    How is the oxygen cycle effected?
    1. Human activities
    2. Running of automobiles
    3. Consumption of fossil fuels
    Choose the correct code

    A) 1 and 2            

    B) 2 and 3

    C) 1 and 3            

    D) 1, 2, 3

    Correct Answer: D

    Solution :

    The oxygen concentration in atmosphere is 21%. The oxygen cycle is effected by human activities such as running automobiles and consumption of fossil fuels which release more carbon dioxide in the atmosphere.


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