Farmland runoff containing fertilizers and livestock waste is the main source of the nitrogen and phosphorus nutrients that cause the annual Chesapeake
Bay hypoxic region, which is also known as a dead zone.
Not exact matches
The 2015 Chesapeake
Bay forecast calls for an oxygen - depleted, or
hypoxic,
region of 1.37 cubic miles, about 10 percent below the long - term average.