1. Eutrophication of Lake Erie Teela Gaetz

2. Formation of Lake Erie | Lake Erie was formed originally by glacial movement around 1 million years ago | Lake Erie in its present form is about 4,000 years old | Lake Erie started as a a lowland or basin but after many glacier advances was formed into the lake it now is | Lake Erie was formed originally by glacial movement around 1 million years ago | Lake Erie in its present form is about 4,000 years old | Lake Erie started as a a lowland or basin but after many glacier advances was formed into the lake it now is

3. What Happened? | In the 1960’s plant and animal life in Lake Erie started to die off due to pollution | Run off and sewage was causing there to be too many nutrients in the lake disturbing the natural balance | In the 1960’s plant and animal life in Lake Erie started to die off due to pollution | Run off and sewage was causing there to be too many nutrients in the lake disturbing the natural balance

4. What happened (cont) | The extra nutrients in the lake caused an increase in the growth of algae, the added amount of algae caused a depletion of oxygen which was needed by the lake’s plant’s and animal’s to survive

5. What has been done to improve Lake Erie | All sewage and septic systems surrounding Lake Erie were replaced or fixed to reduce the run off into the lake | Debris was collected from Lake Eries shore line | All sewage and septic systems surrounding Lake Erie were replaced or fixed to reduce the run off into the lake | Debris was collected from Lake Eries shore line

6. What has been done to improve Lake Erie (cont) | U.S. Fish and Wildlife Service used money from congress to buy land surrounding Lake Erie to prevent future pollution | Millions were spent on waste water treatment plants to help prevent future pollution | U.S. Fish and Wildlife Service used money from congress to buy land surrounding Lake Erie to prevent future pollution | Millions were spent on waste water treatment plants to help prevent future pollution

7. What challenges does Lake Erie still face | Scientists and lake researchers are worried that what happened to lake Erie in the 60’s could happen again if the conditions of the lake are not monitored and lake clean up is not continued

8. BibliographyBibliography | The internet...... text book a little bit and yeah that’s it the only web page I can name is www.dictionary.com www.dictionary.com | TeeLa | The internet...... text book a little bit and yeah that’s it the only web page I can name is www.dictionary.com www.dictionary.com | TeeLa