Question: Why did the removal of wolves from northern Wisconsin change the makeup of the plants in the forest?

Answer: Wolves are predators of deer, and without wolves, more deer survived and ate more forest plants

Question: What is one difference scientists noticed in parts of Zion national park that had higher species diversity compared with regions with lower species diversity?

Answer: Areas with lower diversity had higher rates of erosion

Question: Choose the sentence that best explains the statement, “Tropical rain forests have the highest biodiversity of any place on earth.

Answer: Tropical rain forests have more species of organisms than any other place on earth