Theteampatriotic15

  SMOG Smog is a type of intense air pollution . The word  " smog " was coined in the early 20th century, and is contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odor.The word was then intended to refer to what wassometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century. This kind of visible air pollution is composed of nitrogen oxides, sulphur oxides, ozone, smoke and other particulatesderived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions. Smog is often categorized as being either summer smog or winter smog. Summer smog is primarily associated with the photochemical formation of ozone. During the summer season when thetemperatures are warmer and there is more sunlight present, photochemical smog is the dominant type ofsmog formation.  During ...