Eutrophication, too much nutrient enrichment in aquatic ecosystems causing algal blooms and anoxia, causes fish kills, lack of biodiversity, and renders h2o unfit for ingesting along with other industrial uses. Extreme fertilization and manure application to cropland, and also superior livestock stocking densities bring about nutrient (mostly nitrogen and phosphorus) https://thefarmingblog.blob.core.windows.net/the-farming-blog/perfect-farm-name.html