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9th Class General Knowledge Our Environment Question Bank Our Environment

  • question_answer
    Greenhouse gases trap heat in the atmosphere which makes the Earth warmer. Which of these groups consists of greenhouse gases that cause most harm?

    A)  Methane, Carbon dioxide, Nitrous oxide

    B)  Nitrogen, Oxygen, Methane

    C)  Ozone, Carbon monoxide, Helium

    D)  Water vapour, Nitrogen, CFCs

    Correct Answer: A

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