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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

CHAPTER 2, SECTIONS 4 AND 5

Air Quality and Environmental Issues

slide2
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

slide4
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

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

slide6
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

slide7
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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