Answer no copy paste
Homeostasis and thermoregulation
When temperatures are too low, these processes may be disrupted, which can lead to cellular damage and even death. Homoeothermic endotherms, such as bears, bats, and birds, regulate their body temperature by generating heat internally.
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Answer:
"U"-shaped, with peaks at the low and high extremes of beak size; disruptive selection
Because one has rule A so it wouldn't make Sense.
C. is your correct answer.