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    Question

    Alveoli are related to which system of the human body?

    A Circulatory system Correct Answer Incorrect Answer
    B Excretory system Correct Answer Incorrect Answer
    C Reproductive system Correct Answer Incorrect Answer
    D Respiratory system Correct Answer Incorrect Answer

    Solution

    Alveoli are tiny air sacs in the lungs where gas exchange occurs, part of the respiratory system.

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