Dead zones in the ocean result from __________.
point-source pollution, leading to high-oxygen and low-nutrient environments where rivers flow into the ocean point-source pollution, leading to low oxygen and high nutrient upwellings of deep ocean waters nonpoint-source pollution, leading to very high-oxygen environments, typically located in the deep pelagic zones of the ocean nonpoint-source pollution, leading to very low-oxygen environments, typically located where rivers flow into the ocean
Dead zones in the ocean result from nonpoint-source pollution, leading to very low-oxygen environments, typically located where rivers flow into the ocean.
This occurs when excess nutrients, primarily from agricultural runoff and other sources, enter the ocean and promote algal blooms. When these blooms die and decompose, the process consumes oxygen, leading to hypoxic (low-oxygen) conditions that can be detrimental to marine life.