Environmental Engineering in CE
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?

SO₂
CFC (chloro fluoro carbons)
CO
NOx

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Environmental Engineering in CE
Higher concentration of CO₂ in atmosphere

All of these
Reflects and absorbs the longer wavelength (infra-red) radiations
Allows visible solar radiation (ultraviolet) of short wave-length to pass through
Prevents solar heat being radiated out completely, resulting in

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