$CO_2, CH_4, N_2O$ and $CFCs$ are called greenhouse gases because they absorb and emit

  • A
    $UV-$rays
  • B
    Heat rays
  • C
    $X-$rays
  • D
    Gamma rays

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Discuss the causes and effects of global warming. What are the measures to control global warming?

If there were no $CO_2$ in the Earth's atmosphere,the temperature of the Earth's surface would be ..........

During the past century,the temperature of the Earth has increased by $......$. (in $^{\circ}C$)

Which of the following groups of gases is responsible for the 'Greenhouse Effect'?

If there was no $CO_2$ in the earth's atmosphere,the temperature of earth's surface would be

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