Their black skin is covered in thick, water-repellent, white fur. Adult polar bears are protected from the cold by a layer of blubber that is more than four inches thick.
(Their black skin; is covered; in thick, water-repellent, white fur) (Adult polar bears; are protected; from the cold; by a layer of blubber) (a layer of blubber; is; more than four inches thick)
Their black skin Adult polar bears a layer of blubber
is covered are protected is
in thick, water-repellent, white fur
from the cold by a layer of blubber
more than four inches thick