Question

What are the effects of spreading of dead zones on marine ecosystem?

Answer 1

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Answer:
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1) As the water heats up from climate change, there are more dead zones that are forming because of eutrophication. 

2) The algae overgrowth blocks the light from the sun, and the blocking of sunlight is harmful to creatures underwater.

3) As life ceases to exist and there is less oxygen circulating underwater, oxygen minimum zones (OMZ) are the result. 

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Answer 2

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➡️ Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes, caused by "excessive nutrient pollution from human activities coupled with other factors that deplete the oxygen required to support most marine life in bottom and near-bottom water.

That's it..