题目选项分析

Heightened land erosion, caused by human activity, has many negative effects including the following: algae blooms, coral reef destruction, certain fish populations rising, certain fish populations falling, and the introduction of harmful chemicals to the ocean's environment

Heightened land erosion, caused by human activity, has many negative effects including the following: algae blooms, coral reef destruction, imbalance of the fish population, and the introduction of harmful chemicals to the ocean's environment