2. How do these characteristics help polar bears and walruses adapt to cold environments? Circle the correct answers.
What other polar animals do you know of? Do they have these characteristics?
Animals living in polar regions have to keep themselves cool / warm , so many of them have thick fur and a thick layer of fat under their skin to maintain their weight / body temperature .
3. Some animals that do not live in polar regions use other ways to cope with the cold winter. Read this self-introduction of a hedgehog. Talk about the reasons for hedgehogs to have a deep winter sleep and their body condition during the sleep.
The chilly winter is coming. I know there will be no food when winter comes, so I eat enough food to build up a thick layer of fat under my skin before the deep winter sleep. During the sleep, I curl myself up like a ball to reduce heat loss. I also lower my body temperature, and reduce the frequency of my breathing and heartbeat. All these help reduce energy consumption.
hedgehog
What animal hangs itself upside down during its deep sleep in winter?
4. Besides having a deep winter sleep, how else do animals cope with cold environments?
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