Question

What causes hypoxia in the Gulf of Mexico off the coast of New Orleans?

Answer 1

The annually recurring Gulf of Mexico hypoxic zone is primarily caused by excess nutrient pollution from human activities, such as urbanization and agriculture, occurring throughout the Mississippi River watershed.

Answer 2

Result of excess nutrients from the Mississippi River and seasonal stratification(also known as layering) of waters in the Gulf. Happy learning!

--Applepi101