AP BIOLOGY

Detailed explanation-1: -A pond fills with organic matter during eutrophication. Explanation: Eutrophication takes place when an environment like aquatic environment in the form of lakes, ponds, sea etc is filled and enriched with organic matter and nutrients.

Detailed explanation-2: -Harmful algal blooms, dead zones, and fish kills are the results of a process called eutrophication-which occurs when the environment becomes enriched with nutrients, increasing the amount of plant and algae growth to estuaries and coastal waters.

Detailed explanation-3: -Excess algae like this can block sunlight needed by native bottom-dwelling plants, which can kill them. Excess algae results from an overproduction of organic matter, or eutrophication. Eutrophication is a condition caused by excessive amounts of nutrients-such as nitrogen and phosphorus-in a waterbody.

Detailed explanation-4: -Eutrophication occurs when the water body becomes overly enriched with nutrients. Various factors like excessive use of fertilisers, untreated sewage, usage of detergents containing phosphorous and industrial discharge of waste may contribute to eutrophication.

Detailed explanation-5: -An overabundance of nutrients-primarily nitrogen and phosphorus-in water starts a process called eutrophication. Algae feed on the nutrients, growing, spreading, and turning the water green. Algae blooms can smell bad, block sunlight, and even release toxins in some cases.