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Chemistry · Oct / Nov 2020 · Paper 11 · Question 32

5070Air quality and climate

Carbon dioxide, methane and oxygen are gases involved in the carbon cycle. Which of these gases may contribute to global warming?

  1. Acarbon dioxide only
  2. Bcarbon dioxide and methane
  3. Ccarbon dioxide and oxygen
  4. Dmethane only

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Correct answer: B. carbon dioxide and methane

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