AP BIOLOGY

Detailed explanation-1: -Bears are another example of consumers. Black bears are omnivores and scavengers, like skunks and raccoons, which means that they will eat just about anything. In a forest community, Black Bears will eat blueberries, bugs, acorns, and many kinds of nuts.

Detailed explanation-2: -they are also called autotrophs. The primary consumers of Yellowstone are pronghorns, beavers, elk, cutthroat trout, mayflies, and deer mice. The secondary consumers of Yellowstone are osprey, bald eagles, bighorn sheep, grizzly bears, coyotes, red-tailed hawks, and bison.

Detailed explanation-3: -Bear tissues can use free-fatty acids (FFA) and ketones as energy sources in addition to glucose. Hibernating grizzly bears do not normally eat for 4-5 months and thus exhibit a type of starvation relying on stored fat for energy. The energy from fat is derived via a process called lipolysis.

Detailed explanation-4: -Glucose stores heat and energy. Because animals cannot produce energy directly from the sun, they must eat plants or other animals that eat plants, and acquire energy, either directly or indirectly, from glucose. Animals that eat plants exclusively are called herbivores.