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11-3 Water Pollution

11-3 Water Pollution. Page 284. A. Introduction. 1. Water pollution is the introduction to chemical, physical or biological agents into water that degrade water quality. B. Point-Source Pollution. 1. one source of pollution. B. Point-Source Pollution.

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11-3 Water Pollution

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  1. 11-3 Water Pollution Page 284

  2. A. Introduction • 1. Water pollution is the introduction to chemical, physical or biological agents into water that degrade water quality.

  3. B. Point-Source Pollution • 1. one source of pollution.

  4. B. Point-Source Pollution • 2. Examples include factory or water treatment plant.

  5. C. Nonpoint Source Pollution • 1. Also known as runoff pollution.

  6. C. Nonpoint Source Pollution • 2. comes from many different sources; difficult to identify.

  7. D. Wastewater • 1. water containing waste from homes and/or industry.

  8. D. Wastewater • 2. needs to be treated by water treatment plants.

  9. D. Wastewater • 3. the solid material left behind is called sewage sludgewhich is burned and the ashes are buried in the landfill.

  10. E. Artificial Eutrophication • 1. Eutrophication= increase in the amount of nutrients.

  11. E. Artificial Eutrophication • 2. Artificial Eutrophication= increase in nutrients due to sewage or fertilizer runoff.

  12. F. Thermal pollution • 1. occurs when power plants and other industries use water in their cooling systems and release the warm water into lakes/rivers.

  13. F. Thermal pollution • 2. As a result, a significant amount of aquatic organisms die off; ecosystem is disrupted.

  14. G. Groundwater Pollution • 1. pollution in the surface water percolates (spreads) down into the soil and collects as groundwater.

  15. H. Ocean Pollution • 1. Ships may legally dump waste in some parts of the oceans.

  16. H. Ocean Pollution • 2. Oil spills cause major disruptions in ecosystems.

  17. H. Ocean Pollution • 3. Surprisingly, most oil pollution occurs from nonpoint sources on land.

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