4th Class Science Our Environment Question Bank Self Test-7

  • question_answer Forests are called as the 'lungs of nature" why?

    A)  Bring down the carbon dioxide level in the atmosphere

    B)  Bring down the oxygen level in the atmosphere

    C)  Maintain the balance of oxygen and carbon dioxide in the atmosphere

    D)  Increase the level of carbon dioxide in the atmosphere

    E)  Increase the level of oxygen in the atmosphere

    Correct Answer: C

    Solution :

    Not Available


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