Nitrogen pollution has become a crisis in many areas, causing algae blooms and decreased oxygen levels from their subsequent decomposition. Our farms sequester nitrogen and limit the potential for algae blooms. Excess fertilizer remnants come from farms that are near rivers and lakes. The materials are then caught in these rivers and lakes which flow into the larger bodies of waters and create the dead zones. Nitrogen and phosphorous enter the river through upstream runoff of fertilizers, soil erosion, animal wastes, and sewage.By controlling less usage of fertilizer, we can reduce the amount of runoff that is wasted into the sea.