1. 6:33 PM March 3, 2009Sanders 5.3: How Water Pollution Affects Ecosystems  Unit 5: Water “All is born of water; all is sustained by water.” Take out Notebook Hand in Homework  Unit 5: Water “All is born of water; all is sustained by water.” Take out Notebook Hand in Homework

2. 6:33 PMMarch 9, 2016Unit 5: Water Homework Questions 1. What are the main pollutants of groundwater? 2. Why is ground water so difficult to clean up? 3. How does nutrient-rich fertilizer causes fish kills? 1. What are the main pollutants of groundwater? 2. Why is ground water so difficult to clean up? 3. How does nutrient-rich fertilizer causes fish kills?

3. 6:33 PMMarch 9, 2016Unit 5: Water Bioaccumulation  Pesticides settle in the water bottom.  Bottom feeding organisms have the toxins accumulate.  Small fish eat hundreds of small organisms.  Larger fish eat hundreds of small fish.  Birds of prey eat several large fish.  Pesticides settle in the water bottom.  Bottom feeding organisms have the toxins accumulate.  Small fish eat hundreds of small organisms.  Larger fish eat hundreds of small fish.  Birds of prey eat several large fish.

4. 6:33 PMMarch 9, 2016Unit 5: Water Water Pollution Affects Ecosystems  All of the toxins get concentrated at each trophic level.

5. 6:33 PMMarch 9, 2016Unit 5: Water

6. 6:33 PMMarch 9, 2016Unit 5: Water Artificial Eutrophication  Lakes and slow moving streams slowly eutrophy.  Eutrophication means an over abundance of nutrients.  Fertilizers and detergents contain materials that accelerate this process.  In an accelerated processes, plants and animals die off.  Lakes and slow moving streams slowly eutrophy.  Eutrophication means an over abundance of nutrients.  Fertilizers and detergents contain materials that accelerate this process.  In an accelerated processes, plants and animals die off.

7. 6:33 PMMarch 9, 2016Unit 5: Water Natural Eutrophication

8. 6:33 PMMarch 9, 2016Unit 5: Water Thermal Pollution  Hot water from power plants disrupts the ecosystem.  Fish die off as a result of the excessive heat.  Hot water from power plants disrupts the ecosystem.  Fish die off as a result of the excessive heat.

9. 6:33 PMMarch 9, 2016Unit 5: Water Power Plants Heating the Water

10. 6:33 PMMarch 9, 2016Unit 5: Water Cleaning up Water Pollution  1972 Congress passed Clean Water Act.  “Restore and maintain chemical, physical and biological integrity of the nation’s waters”  1972 Congress passed Clean Water Act.  “Restore and maintain chemical, physical and biological integrity of the nation’s waters”

11. 6:33 PMMarch 9, 2016Unit 5: Water Cleaning Up Water  Many toxins removed.  Metals removed before discharge in streams.  Agricultural wastes channeled into pools.  Pollutants decomposed.  Waster treatment processes improved.  Many toxins removed.  Metals removed before discharge in streams.  Agricultural wastes channeled into pools.  Pollutants decomposed.  Waster treatment processes improved.

12. 6:33 PMMarch 9, 2016Unit 5: Water Special Problem of Ground Pollution  Groundwater is pollution that seeped into ground.  Pesticides  Chemical fertilizers  Agricultural chemicals  What is the problem with cleaning this up?  Groundwater is pollution that seeped into ground.  Pesticides  Chemical fertilizers  Agricultural chemicals  What is the problem with cleaning this up?

13. 6:33 PMMarch 9, 2016Unit 5: Water Bottled Water  Bottled water.  What are some problems associated with bottled water?  Bottled water.  What are some problems associated with bottled water?