The problem of hypoxic,or "dead" zones,in the ocean is caused by:

Question

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Hypoxic or "dead" zones in the ocean are caused by eutrophication due to excessive nutrient inputs, particularly nitrogen and phosphorus from human activities such as agricultural runoff, sewage discharge, and industrial waste. These nutrients promote the growth of algae, which consume oxygen and create hypoxic conditions in the water, leading to the death of marine organisms. Oil pollution, lead pollution, thermal pollution, and pesticides can also have detrimental effects on marine ecosystems, but they are not directly responsible for the formation of hypoxic zones.

The Problem of Hypoxic,or "Dead" Zones,in the Ocean Is Caused