Animals like whale and Polar bear sleep for months during winter. How do you think their bodies meet its energy requirements? Which complex carbohydrate cannot be digested by human body?
Answers
Thanks to special adaptations, such as a thick layer of blubber, two layers of fur, compact ears, and a small tail, polar bears can withstand temperatures as low as -50° Fahrenheit. Polar bears use snow like a towel. First they shake off the water; then they roll in the snow to dry off.
Answer:
The polar bear's life cycle is closely tied to sea ice. Polar bears rely on the ice to travel, hunt seals, breed, and in some cases, den. Scientists believe polar bears are unlikely to survive if ice-free periods exceed their fasting ability (220 days), especially in areas that lack alternate marine mammal prey.
Polar bears are strong swimmers and divers, a characteristic that allows them to swim from one ice floe to the next. But there’s a limit to how far they can swim. Long swims are especially dangerous to young cubs.