Natural sources of air pollution are
(A) Forest fires
(B) Volcanic eruptions
(C) Dust storm
(D) Smoke from burning dry leaves
Correct Answer : Volcanic eruptions
Question Asked : SSC CGL Tier-I Exam 2014
Explanation : Some of the natural sources of air pollution an ground dust, salt spray from oceans, volcanic eruptions, hydrogen sulfides from natural sources, etc Large amount of gases and ash from volcanic eruptions blacken the skies and increase the background pollution levels for years.
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