AP BIOLOGY

Detailed explanation-1: -Polar bears live in one of the planet’s coldest environments and depend on a thick coat of insulated fur, which covers a warming layer of fat. Fur even grows on the bottom of their paws, which protects against cold surfaces and provides a good grip on ice.

Detailed explanation-2: -According to the National Park Service, there are three major strategies for animals, as well as insects and plants, to survive through cold temperatures: migration, hibernation and resistance (tolerance).

Detailed explanation-3: -You may have noticed that your pet cat, dog or rabbit begins to grow a thicker coat as the days become shorter in the autumn. This, of course, happens with wild mammals too, such as foxes, badgers and squirrels and the extra fur helps them to keep their body temperature constant during very cold weather.

Detailed explanation-4: -Animals have many adaptations to survive in this harsh environment; Animals need shelter and insulation in the Tundra. The animals here tend to have thicker and warmer feathers and fur. Many of them have larger bodies and shorter arms, legs and tails which helps them retain their heat better and prevent heat loss.