Reptiles, amphibians, and fish are all cold-blooded animals. Their body temperatures are determined by their surroundings. How does a cold-blooded animal’s ability to digest food change in colder temperatures?

Cold-blooded animals rely on heat from their surroundings, so their body processes slow down when the environment gets colder. Digestion is one of those processes, so they digest food more slowly at lower temperatures. Choice C is correct; the rate does not stay the same or speed up.

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