A large lake in Mississippi was drained for a construction project and later refilled. Before it was drained, the lake supported a diverse aquatic ecosystem. After being refilled with water by humans, the lake initially showed growth of algae and small aquatic plants. Gradually, this led to the return of small fish, invertebrates, and other large organisms.

Which two phrases represent factors that most significantly influenced the recovery of the aquatic ecosystem by secondary succession?

the size and depth of the lake

the rocks and boulders on the shore

the animals and vegetation around the lake

the water temperature and availability of sunlight

the quality and composition of the sediment in the lake bed