Question

Eutrophication is harmful to an ecosystem because —


higher levels of evaporation cause the water level to drop significantly


cold water rises to the top of the ocean and decreases nutrients


a new predator species is introduced and drastically decreases the prey population


the addition of excessive nutrients cause an increase in algal blooms

Answer 1

The correct answer is: the addition of excessive nutrients cause an increase in algal blooms. This leads to a depletion of oxygen levels in the water due to the breakdown of dead algae, which can harm or kill many aquatic organisms in the ecosystem.