ch18_0495556718_164056

ch18_0495556718_164056 - fuel combustion and sulfur oxides...

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Chapter 18 Air Pollution Summary 1. The layers of the atmosphere are the troposphere, stratosphere, mesosphere, and thermosphere. 2. Major classes of air pollutants include carbon, sulfur, and nitrogen oxides, volatile organic compounds, suspended particulate matter, photochemical oxidants, radioactive substances, and hazardous chemicals that can cause health problems. Primary sources of these pollutants include cars, industry, and natural phenomena such as volcanic eruptions. 3. The two types of smog are the photochemical and the industrial, or gray-air, smog. 4. Acid deposition includes wet deposition of acidic rain, snow, fog, and cloud vapor with pH less than 5.6, and dry deposition of acidic particles. Major sources of acid deposition are nitrogen oxides produced during fossil
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Unformatted text preview: fuel combustion and sulfur oxides produced primarily from coal-fired power plants. 5. Harmful effects of air pollution include various respiratory diseases, premature deaths, damage to plants, and materials such as buildings, cars, statues, etc. 6. We can reduce air pollution by reducing emission through the use of low-sulfur coal, shifting to less polluting fuels (e.g., coal to natural gas), removal of pollutants after combustion or lower emissions through the use of mass transit or alternative transportation, improving fuel efficiency, and tax incentives....
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