Answer :

Gibbs
Nutrients from fertilizers are harmful to aquatic ecosystems because fertilizers are often high in nitrogen and phosphorous which cause problems in aquatic ecosystems. These chemicals lead to algal blooms which causes algae to die faster and decompose thus reducing the oxygen content of the water and also hurting other organisms within the aquatic ecosystem as a result.

Answer:

B. The increase in algae population reduces oxygen in the water.

Explanation:  if ody ssey, it wants the answer from assignment 12 page 2 paragraph 2. Under Water Pollution. (if printed off as the software offers) Second paragraph, second sentence states, "The nutrients in fertilizer can also cause an unnatural increase in the algae population. When large algae die, they decompose and REMOVE OXYGEN FROM THE WATER. Fish and other organisms eventually die from lack of oxygen."  

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