Same system as us humans and all other mammals use: the respiratory system, i.e., using their lungs to breathe.
Its nose, mouth and lungs of course.
No.
If polar bears didn't have claws they would be vulnerable to attack from other animals because Polar bears can use their claws to defend themselves. Polar bears can also hunt and find food using their claws therefore Polar bears need their claws to survive!.
use it for food needs
Polar bears use their teeth, claws and strength in their paws and jaws.
polar bears reproduce sexually which mostly uses egg and sperm equals a baby
to be warm
because sun bears are so use to being warm all year and polar bears can adapt better ( i reALLY DONT NO ?)
All Polar Bears are left handed.
Global Positioning System (GPS)
polar bears can be protected by killing them all and then using the meat to feed the dogs and use the skin as a condom
The diet depends on the habitat e.g. the polar bear will hunt and consume animals below it in the polar habitat e.g. seals, whereas the brown bear which resides in woodland habitats would feed on woodland creatures e.g. foxes.