Air Pollution
"Air pollution is a serious problem in many of the worlds large cities. Heavy concentrations of air pollutants, which are often in the form of smog, settle over a city, creating a health hazard for its people. Air pollution occurs when wastes dirty the air. People produce most of the wastes that cause air pollution. Such wastes are usually in the form of gases. These substances result chiefly from burning fuel to power motor vehicles and to heat buildings. Industrial processes and the burning of garbage also contribute to air pollution. Natural pollutants include dust, pollen, soil particles, (100 Words) and naturally occurring gases." (Encyclopedia)
"The rapid growth of population and industry, and the increased use of automobiles and airplanes, have made air pollution a serious problem. The air we breathe has become so filled with pollutants that it can cause health problems. Polluted air also harms plants, animals, building materials, and fabrics. In......
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Approximate Word Count: 497
Approximate Pages: 2 (260 words per double-spaced page) |