"Eutrophication (Greek: eutrophia\u2014healthy, adequate nutrition, development; German: Eutrophie) or more precisely hypertrophication, is the ecosystem's response to the addition of artificial or natural substances, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system. One example is the \"bloom\" or great increase of phytoplankton in a water body as a response to increased levels of nutrients."@en . . . .