Eutrophication, abnormal nutrient enrichment in aquatic ecosystems causing algal blooms and anoxia, causes fish kills, lack of biodiversity, and renders h2o unfit for ingesting and other industrial takes advantage of. Excessive fertilization and manure application to cropland, along with superior livestock stocking densities cause nutrient (primarily nitrogen and phosphorus) runoff https://thefarmingblog.blob.core.windows.net/the-farming-blog/index.html