Question

question 20 which of the following is not a consequence of the runoff of fertilizers into the water supply? agricultural ecosystems are destroyed. fish die from a lack of oxygen in the water. bodies of water are contaminated. the growth of algae disrupts a lakes ecosystem.

Explanation:

Fertilizer runoff into water supplies causes eutrophication. This leads to algae growth which can deplete oxygen in water, killing fish, contaminating water - bodies and disrupting lake ecosystems. However, it does not directly destroy agricultural ecosystems. Agricultural ecosystems are on land where crops are grown, while the impacts of fertilizer runoff mainly occur in water - based ecosystems.

Answer:

Agricultural ecosystems are destroyed.