Consider the Following Marine Community: Sea Otters Prey on Sea

Multiple Choice

Consider the following marine community: Sea otters prey on sea urchins and therefore help maintain a healthy sea urchin population. Sea urchins prey on kelp. By helping to maintain viable sea urchin populations, the sea otters are also allowing enough kelp to grow and act as a habitat for other organisms.
-In this marine community, the sea otter is a

A) primary consumer.
B) producer.
C) keystone species.
D) scavenger.