explain the process of eutrophication.

Brief Explanations:

Eutrophication starts with excess nutrients (like nitrogen and phosphorus) entering a water - body from sources such as agricultural runoff, sewage. These nutrients cause rapid growth of algae and aquatic plants. When they die, decomposition by bacteria consumes oxygen, leading to low oxygen levels (hypoxia) which can harm fish and other aquatic organisms.

Answer:

Eutrophication is the process by which a water - body becomes overly enriched with nutrients, leading to excessive growth of algae and aquatic plants. This overgrowth, followed by decomposition, depletes oxygen in the water, causing harm to aquatic life.