Eutrophication can lead to decreased dissolved oxygen in a body of water. this often results in a. the deaths of all plant and marine life in the area b. an increase in water pollution in the area c. more biodiversity in the area d. less air pollution in the area

A. The deaths of all plants and marine life in the area.
It's because of the lack of oxygen since eutrophication often leads to algal bloom which in turn blocks the radiation and doesn't let oxygen to pass through it

A.  the deaths of all plant and marine life in the area

Explanation:

Eutrophication is the enrichment of the mineral and the nutrient that is formed by the access of the growth of the algae and thus results in the oxygen depletion and hence the runoff and fertilizers and other sewage that are contained in the aquatic systems.

Ibelieve it's the pacific islands 

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