Chapter 2 sections 4 and 5
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CHAPTER 2, SECTIONS 4 AND 5. Air Quality and Environmental Issues. Pollutants – harmful substances in air, water, or soil Can affect human health. http://www.tropical-rainforest-animals.com/image-files/airpollutants.jpg. What are sources of air pollution?.

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CHAPTER 2, SECTIONS 4 AND 5

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Chapter 2 sections 4 and 5

CHAPTER 2, SECTIONS 4 AND 5

Air Quality and Environmental Issues


Chapter 2 sections 4 and 5

  • Pollutants – harmful substances in air, water, or soil

  • Can affect human health

http://www.tropical-rainforest-animals.com/image-files/airpollutants.jpg


What are sources of air pollution

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


Chapter 2 sections 4 and 5

  • 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:[email protected]/deki/files/6346/=la-smog.jpg


What are the types of environmental issues

What are the types of environmental issues?

  • Resource use, population growth, and pollution

http://www.susps.org/images/worldpopgr.gif


Chapter 2 sections 4 and 5

  • 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


Chapter 2 sections 4 and 5

  • 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


How are environmental decisions made

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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