Which One of the Following Statements About the Trophic Cascade

Multiple Choice

Which one of the following statements about the trophic cascade in the sea otter and sea urchin-kelp communities along the West Coast of North America are true? Check all that apply.

A) Increased sea otter populations are linked to more profuse growth of the kelp forests.
B) Increased orca (killer whale) predation on sea otters is linked to more profuse growth of the kelp forests.
C) Increased sea otter populations are linked to increased sea urchin populations.
D) Increased orca (killer whale) predation on sea otters is linked to increased sea urchin populations.
E) Increased sea urchin populations are linked to less profuse growth of the kelp forests.