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  3. 7th Class
  4. Science
  5. Respiration in Organisms

7th Class Science Respiration in Organisms Question Bank Respiration In Plants And Animals

  • question_answer
     An adult human being breathes in and out for ______ times in a minute.

    A) 15-18                          

    B) 10-15

    C) 20-25                          

    D) 50-60

    Correct Answer: D

    Solution :

    50-60


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