Dead zones are areas along the coasts where rivers spill excess nutrients into the oceans.Microorganisms feed on these nutrients,which in turn causes them to use up all the ________ in the water and kill larger organisms like fish.

Question

Quizplus · Accepted Answer

The excess nutrients from rivers cause an increase in the amount of microorganisms in the water, which leads to the use up of oxygen. This results in a dead zone where larger organisms cannot survive. Sediments and nitrogen do not directly cause dead zones, while phosphorus can contribute to the excess nutrients but does not directly lead to the lack of oxygen.

Dead Zones Are Areas Along the Coasts Where Rivers Spill