Data from: Eating the metaphorical elephant: Meeting Nitrogen Reduction Goals in Upper Mississippi River Basin States
<p dir="ltr">The hypoxic zone in the Gulf of Mexico is the world's second largest.  In 2008, the Hypoxia Task Force directed states in the Mississippi River Basin to develop plans to reduce nitrogen and phosphorus loads to the Gulf.  The states of Iowa, Illinois, and Minnesota developed Nutrient Reduction Strategies …