Multiple Choice Questions on The increase in the carbon dioxide content in atmosphere is mainly due to 1 the burning of foss........... for General Studies (Level 1) Preparation

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Multiple Choice Questions

The increase in the carbon dioxide content in atmosphere is mainly due to 1 the burning of foss...........

World Geography (Easy) World climates
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    The increase in the  carbon dioxide content in atmosphere is mainly due to :
    1) the burning of fossil fuels in large quantities 
    2) the industrial discharge being emitted 
    3) large-scale deforestation 

    only 1

    Incorrect Answer

    1 and 2

    Incorrect Answer

    1 and 3

    Correct Answer

    all of the above 

    Incorrect Answer
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    Explanation:
    • CO2 plays an important role in climate because it is one of the atmospheric "greenhouse" gases (GHGs) which keep the Earth's surface about 33 degrees warmer than the -18C temperature it would be at were they not present.
    • Most significantly, the concentration of CO2 has been rising exponentially (at a rate of about 0.17% per year) since the industrial revolution, due mainly to the combustion of fossil fuels but also to large-scale tropical deforestation which depletes the climate system's capacity for photosynthesis. Hence option 3rd is correct.

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