Which of the following is false about polar bears and
cold stress?
a. They have coarse, hollow guard hairs in their
coats, allowing them to shed water quickly.
b. Brown adipose tissue insulates and generates
metabolic heat.
c. They hibernate during the long, cold, arctic
winter.
d. Thick, soft underhair traps heat.
e. Close bodily contact between mother and cubs
helps to reduce heat loss.
Answer: c
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