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9th Class Science Natural resources Question Bank Natural Resources

  • question_answer
    Which of the following plays a major role in replacing oxygen in the atmosphere?

    A) Green plants  

    B) The weathering of rocks

    C) Fossil-fuel combustion

    D) All of the above

    Correct Answer: A

    Solution :

    Green plants replace oxygen in the atmosphere, through a process called photosynthesis.


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