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Sources of Air pollution
Sources of Air Pollution Air pollution, harmful gases and particles in the air, comes from sources. Sources of air pollution can impact National Park Service (NPS) areas even though the vast majority of air pollution is created outside park boundaries. Learn more about sources of air pollution and transport by exploring the tabs below. Types of Sources Transport Parks Where does pollution come from? There are four main types of air pollution sources: mobile sources – such as cars, buses, planes, trucks, and trains stationary sources – such as power plants, oil refineries, industrial facilities, and factories area sources – such as agricultural areas, cities, and wood burning fireplaces natural sources – such as wind-blown dust, wildfires, and volcanoes Mobile sources account for more than half of all the air pollution in the United States and the primary mobile source of air pollution is the automobile, according to the Environmental Protection Agency. Stationa...
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