Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

CFC (chloro fluoro carbon)
SO₂
CO₂
Hydrocarbons

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Environmental Engineering in CE
Higher concentration of CO₂ in atmosphere

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

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