A process of pollution that occurs when a lake or stream becomes over-rich in plant nutrient and as a consequence becomes overgrown in algae and other aquatic plants.
excessive nutrients in a lake or other body of water, usually caused by runoff of nutrients (animal waste, fertilizers, sewage) from the land, which causes a dense growth of plant life; the decomposition of the plants depletes the supply of oxygen, leading to the death of animal life
