AP BIOLOGY

Detailed explanation-1: -Polar bears are tertiary consumers, meaning they eat other secondary and primary consumers.

Detailed explanation-2: -For example, the polar bear eats Arctic foxes which are secondary consumers. Their primary prey is seals, which eat the fish that eat zooplankton. Therefore they are both tertiary and quaternary consumers.

Detailed explanation-3: -Polar bears have a strong cultural significance for Arctic people, and beyond, polar bears are top predators in their food web.

Detailed explanation-4: -Primary consumers, mostly herbivores, exist at the next level, and secondary and tertiary consumers, omnivores and carnivores, follow. At the top of the system are the apex predators: animals who have no predators other than humans.