Eutrophication, abnormal nutrient enrichment in aquatic ecosystems leading to algal blooms and anoxia, brings about fish kills, lack of biodiversity, and renders h2o unfit for ingesting and other industrial utilizes. Extreme fertilization and manure application to cropland, along with substantial livestock stocking densities cause nutrient (mostly nitrogen and phosphorus) runoff https://storage.googleapis.com/the-farming-blog/index.html