Mark the correct statement .A. Photochemical smog occurs in day time while the classical smog occurs in early morning hours.B. Acid rain damages the buildings while it is not toxic to vegetation and aquatic life .C. Carbon monoxide is a greenhouse gas which results in global warming .D. Smoke consists of fine particcles produced during crushing and griding of solid materials

Mark the correct statement .A. Photochemical smog occurs in day time w

1.	Mark the correct statement .A. Photochemical smog occurs in day time while the classical smog occurs in early morning hours.B. Acid rain damages the buildings while it is not toxic to vegetation and aquatic life .C. Carbon monoxide is a greenhouse gas which results in global warming .D. Smoke consists of fine particcles produced during crushing and griding of solid materials
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