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10th Class Science Our Environment Question Bank Our Environment

  • question_answer
    Which of the following layers constitutes biosphere?

    A) Hydrosphere   

    B) Lithosphere                      

    C) Atmosphere                    

    D) All of the above

    Correct Answer: D

    Solution :

    All the life supporting zones on earth together form the biosphere which in turn is formed of various ecosystems.


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