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Understanding Environmental Issues: Air Quality & Pollution

Learn about pollutants in air, water, and soil, their impacts on human health, sources of air pollution, photochemical smog, acid rain, types of environmental issues, resource use, pollution, and how environmental decisions are made.

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Understanding Environmental Issues: Air Quality & Pollution

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  1. CHAPTER 2, SECTIONS 4 AND 5 Air Quality and Environmental Issues

  2. Pollutants – harmful substances in air, water, or soil • Can affect human health http://www.tropical-rainforest-animals.com/image-files/airpollutants.jpg

  3. What are sources of air pollution? • Natural sources include forest fires, dust storms, and volcanoes • Human activities include farming, construction, and burning of fossil fuels http://www.epa.gov/apti/course422/images/fig-7.jpg

  4. Photochemical smog – a brownish haze that is formed when certain pollutants react with each other in sunlight • Acid rain – rain that contains more acid than normal • Both are caused by the burning of fossil fuels http://chemwiki.ucdavis.edu/@api/deki/files/6346/=la-smog.jpg

  5. What are the types of environmental issues? • Resource use, population growth, and pollution http://www.susps.org/images/worldpopgr.gif

  6. Natural resource – anything in the environment used by people • Renewable resource – a resource that is always available or is naturally replaced in a short time • Nonrenewable resource – a resource that is not replaced in a useful time frame http://cchs.usd224.com/Classes09/PlantsofWonder/Pictures/sweet%20corn.jpg http://cdn3.benzinga.com/files/coal-train330_11.jpg

  7. Pollution – the contamination of Earth’s land, water, or air • As the population grows, so does the demand for resources http://sleepapneadisorder.info/wp-content/uploads/2010/06/cars_pollution.jpg

  8. How are environmental decisions made? • Environmental science – the study of natural processes in the environment and how humans can affect them • To help balance the different opinions on an environmental issue, decision makers must weigh the costs and benefits of a proposal http://www.environmentpoint.com/wp-content/themes/lifestyle_20/images/turbine.jpg

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