Answer:
Grizzly bears have very large molar teeth, while polar bears have teeth that are much smaller. Polar bears eat seal blubber, which is soft and does not require much chewing, while brown bears consume many plants. A difference between the skulls is a polar bear has a flatter, lower skull, and its eye orbits are more elevated. Whereas, brown bears do not have blade incisors like the polar bear, but do have very strong molars.
