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Environmental Science

The Nitrogen Cycle in Agricultural Runoff Pollution

Quick fact

The Mississippi River delivers about 1.5 million tons of nitrogen to the Gulf of Mexico each year, creating a dead zone that can cover an area the size of New Jersey.

Why this is interesting

You know how a little fertilizer helps plants grow? But what happens when all that extra nitrogen from farms ends up in rivers, lakes, and oceans – and turns them into lifeless zones?