8th Class Science Pollution of Air and Water Question Bank Pollution of Air and Water

  • question_answer
    The 'greenhouse effect' refers to the

    A) Building up of pollution in the atmosphere

    B) Gradual warming of the Earth's atmosphere

    C) Hole in the ozone layer

    D) Increase in human population on Earth

    Correct Answer: B

    Solution :

    Warming of Earth's surface due to trapping of heat radiations by\[\text{C}{{\text{O}}_{\text{2}}}\], and other greenhouse gases present in Earth's atmosphere is called as greenhouse effect.


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