8th Class Science Sample Paper Science Sample Paper-2

  • question_answer 4)
    Choose the correct option:
    (iv) Nitrogen fixation is brought about by

    A) (a) blue-green algae 

    B)                   (b) bacteria

    C) (c) both (a) and (b)  

    D)                    (d) none of these

    Correct Answer: C

    Solution :

    Not Available

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