I'm not completely sure on this one, but I think they keep warm by their fur. That's the only logical answer I can think of. Hope this helps!
black bears keep warm by their fur and getting into a tight ball during the winter
Either Hibernation, or their body fat keeps heat intact inside their body.
thick fur and thick fat
they have fur
They hibernate in a cave they choose
they can cuddle their cubs too keep them warm.
to keep them warm
To keep warm
enough to get blubber to keep them warm enough to get blubber to keep them warm
To keep them warm and to provide protection to their skin.
to keep them warm
yes they use it to keep warm.
mainly elk,deer,bears animals with hair to keep them warm in wintersmainly elk,deer,bears animals with hair to keep them warm in winters
To keep them warm in the cold
Polar Bears are warm blooded.Polar bears have a thick layer of blubber to help them keep warm and it helps them in the cold environment. Polar Bears are warmblooded so it helps them regulate their body at the same temperature.Read more: Are_Polar_Bears_warm_blooded_or_cold_blooded
there color of skin and there layer of fat to keep warm
so people in the arctic can keep warm and so they have food