Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.
Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air.Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.