Which of the following would be a result of eutrophication of nitrogen?

-undergrowth of water plants

-hypoxia, or low levels of oxygen

-Decreased decomposition

-inactivity of fertilizers

Eutrophication is a phenomenon where there is an excessive amount of nutrients in the lake or any bodies of water due to the runoff from nearby land masses. This cause an excessive growth of plants and the oxygen supply is easily depleted making it hard for other aquatic lives to live. The answer is therefore, the second choice.