how do penguins keep warm in the antarctic?

Well to anwser your question, penguins who live in the freezing antarctic rely on a few of their basic needs. Thick fat 或者 blubber underneath the skin, soft warm downy feathers above the skin but under the thick outer feathers and the thick outer feathers. They also have warm blood at temperatures reaching 102%. They have an oil gland near the base of their tail and they spread this oil with their beaks and flippers. There is the true fact

From the one and only 企鹅 expert here,
The 企鹅 Girl.

A and B