Answers

2015-12-27T12:31:06+05:30
.Polluted air is called smoke. .Smog is mixture of smoke and fog. Togther it is called as smog. It is very dangerous.
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2015-12-27T12:35:28+05:30
Smoke is white grey or black gas produced by something which is burnes Smog is a thick dark unpleasant mist.
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