Rephrase 1: To keep cool in hot weather, a camel saves water in its hump, an elephant moves its big ears to cool down, and a jerboa hides inside its home underground. When it is very cold with ice and snow, the Arctic fox keeps warm with its thick fur, and the walrus stays cozy because it has a thick layer of blubber.
Rephrase 2: When it is very hot, the camel carries water in its hump, the elephant cools off by waving its ears, and the jerboa stays safe and cool by living in a burrow. In freezing places with snow, the Arctic fox stays warm by wearing thick fur, and the walrus uses its thick blubber to keep warm.