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4th Class General Knowledge Our Environment Question Bank Environment and its Conservation

  • question_answer
    Read the following statements.
    1. I am present in air.
    2. Plants need me from the air for making food.
    3. I am released in the air when you breathe out.
    These statements are regarding ___.

    A)  Carbon dioxide          

    B)  Nitrogen         

    C)         Hydrogen       

    D)         Oxygen

    Correct Answer: A

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