7th Class Science Forests: Our Lifeline Question Bank Forests : Our Lifeline

  • question_answer
    DIRECTIONS: Carefully observe pictures given below and answer the following questions. What could arrow 1 and 2 represent in the above diagram?

    A) Oxygen, nitrogen

    B) carbon dioxide, oxygen

    C) oxygen, carbon dioxide

    D) energy, water

    Correct Answer: C

    Solution :

    Plants give out \[{{O}_{2}}\] and animals give out \[C{{O}_{2}}\]


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