Smog is a term that was created from smoke and fog. It is found most typically in urban and suburban areas rather than rural areas because air pollution occurs most often where there are large numbers of people. Exhaust fumes from vehicles are emitted into the air, and a chemical reaction takes place when these fumes react with sunlight, resulting in smog. Another type of smog is created from dirt particles in smoke from the chimneys of factories and houses (Stille 22). These dirt...