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Question
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
Options:
A .  CO
B .  SO₂
C .  NOx
D .  CFC (chloro fluoro carbons)
Answer: Option A

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