#smog types

[informationzon]

What is smog and causes, types?

Smog is air pollution that reduces visibility. The word "smog" first came into use in the early 1900's to describe a mixture of smoke and fog. Smoke usually came from burning coals. Photochemical smog is produced when sunlight combines with nitrogen oxides and at least one organic compound (VOC) compound in the atmosphere.see more..