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7th Class Science Respiration in Organisms Question Bank Self Test-7

  • question_answer
    On the Earth, currently, life is performing two types of respiration, aerobic and anaerobic. Which type of respiration began first on the earth?

    A)  Aerobic

    B)  Anaerobic

    C)  Both starts together

    D)  cannot say

    E)  None of these

    Correct Answer: B

    Solution :


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