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

Option B, low levels of oxygen decreased

Explanation:

Eutrophication is a process by which a stagnant water body becomes nutrient enriched. During rainy season, run off water from agricultural filed carrying excess of fertilizers get mixed with water of a nearby lake. This run off water carries lot of phosphorus and nitrogen which are essential for the growth of plants and hence algal boom or excessive growth of aquatic plants take place in the water body  into which this nutrient enriched run off water was drained. The excessive growth of plant restricts the dissolution of oxygen into the  water body and hence depletion of oxygen  takes place as all available

oxygen has been consumed by aquatic animals.

i think it is dna, i'm not totally sure but i think it might be.