Polar bears mate and carry out a pregnancy. A mother will usually give birth to two cubs at a time.
Internal
Is a salmon internal or external?
Yes
yes
yes everything living reproduces
'External features' means the outside parts of the thing so, for the polar bear, it will be nose, skin, legs, hands, eyes, and lips.
A Polar bear's basic needs are food, shelter, water, the ability to mate and reproduce, and breathe oxygen.
Yes. They can. They will create what are known as grolars, pizzlys, and many other titles. Their offspring can even reproduce with others of their own. This does not happen with cross-breeds, such as the mule.
Polar bears have endoskeletons.
Externally. They lay eggs instead of incubatingadd. But in New Zealand we have some small skinks (McCann's skinks) that bear live young. This may be an adaptation to cold climate at altitude.
They eat fishes!
The external structures of animals protect the animal from harm to internal organs. An example of an external structure is the skin and fur on a bear. The skin protects the internal organs, and the fur protects the skin.
Panda bears are considered to be both internal and external. Its digestive system which requires the panda bear to depend solely on bamboo for their main nutrients are considered to be internal. The external features of the animal include their senses and muscular system.