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Period: to
Eutrophication
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Lake Erie
scientist recognized lake Erie is undergoing human caused eutrophication. -
Great Lakes Water Quality Agreement
US and Canada pass the Great Lakes Water Quality Agreement to lower the amount of phosphorus entering the lake. -
Reduction
Total phosphorus reduction since the passing of Great Lakes Water Quality Agreement marks 60%. -
Algae
Total algae blooms declined by 89% -
Blooming
Algae blooms burst in 1989 -
Toxic Water
Blooms of toxic algae burst and the water becomes toxic to life.
