EVERYDAY SCIENCE

Detailed explanation-1: -An overabundance of nutrients-primarily nitrogen and phosphorus-in water starts a process called eutrophication.

Detailed explanation-2: -Too much phosphorus can cause increased growth of algae and large aquatic plants, which can result in decreased levels of dissolved oxygen– a process called eutrophication. High levels of phosphorus can also lead to algae blooms that produce algal toxins which can be harmful to human and animal health.

Detailed explanation-3: -The most common nutrients causing eutrophication are nitrogen N and phosphorus P. The main source of nitrogen pollutants is run-off from agricultural land, whereas most phosphorus pollution comes from households and industry, including phosphorus-based detergents.

Detailed explanation-4: -Fertilizers (nitrates and phosphates) Eutrophication is predominantly caused by human actions due to their dependence on using nitrate and phosphate fertilizers. Concentrated Animal Feeding Operations. Direct Sewage Discharge and Industrial Waste into Water Bodies. Aquiculture. Natural Events.