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  3. 6th Class
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  5. The Living Organisms and their Surrounding

6th Class Science The Living Organisms and their Surrounding Question Bank Environment

  • question_answer
    Which one among the following is present in trace amount in the air?

    A) Nitrogen                        

    B) Oxygen

    C) Carbon dioxide   

    D)        All the above

    E) None of these

    Correct Answer: C

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