The eutrophication of an aquatic ecosystem can be slowed or reversed by slowing the addition of nutrients to the system. Sources of excess nutrients can be physically blocked from entering the affected ecosystem. Alternately, these sources can be treated to remove nutrients at a point upstream of the affected ecosystem.
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To prevent eutrophication, people must use cleaning agents and detergents that are biodegradable and that do not contain phosphates.To further reduce the amount of nutrients that are causing an overgrowth of algae in lakes and streams, laws need to be created that regulate the dumping of waste water.
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