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Therefore, human causes of eutrophication include the use of agricultural fertilizers. Other causes include sewage and aquaculture, which is the growing or farming of fish, shellfish and aquatic plants. Wastewater from certain industries and burning fossil fuels can also contribute to eutrophication.
This will result in the depletion in the oxygen concentration in the water. This condition of less oxygen usually persists for a long time and the aquatic body is literally 'dead'.Effects of eutrophication:There are many ill effects of eutrophication.