Which of the following is true about Global Warming?

Which of the following is true about Global Warming? mcq given below:

Q. Which of the following is true about Global Warming?

(a) CO₂ is a major greenhouse gas
(b) Stratosphere Ozone Layer is harmful
(c) CFC increases Stratosphere Ozone Layer
(d) Kyoto protocol called for 20% reduction of greenhouse emissions

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Ans: (a) CO₂ is a major greenhouse gas

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