Which of the following is NOT a green house gas?
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A.
Carbon dioxide
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B.
Methane
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C.
Hydrochlorofluorocarbons
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D.
Oxygen
Correct Answer:
D. Oxygen
Explanation:
Oxygen is not considered a greenhouse gas because it does not trap heat in the atmosphere. Greenhouse gases like carbon dioxide, methane, and hydrochlorofluorocarbons (HCFCs) are efficient at absorbing infrared radiation, which leads to the warming of the planet. In contrast, oxygen and nitrogen, which make up the vast majority of Earth's atmosphere, do not have this heat-trapping capability. Therefore, the correct option is Oxygen (D).
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