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NEET Biology Biological Classification And System Of Classification / जैविक वर्गीकरण और वर्गीकरण की प्रणाली Question Bank Economic Importance of Bacteria

  • question_answer
    One of the useful activities of several bacteria is                                                [MP PMT 1998]

    A)            Nitrogen fixation

    B)            Nitrification

    C)            Operation of biogeochemical cycles

    D)            All of the above

    Correct Answer: C

    Solution :

     


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