Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Input: Passage: They are ectothermic , meaning their temperature depends on the temperature of their environment. Ectothermic animals are cold-blooded in that they cannot raise their body temperature on their own. This is unlike humans, whose temperature is controlled from inside the body. Answer: ectothermic
Output:
What is the term for animals that cannot raise their body temperature on their own?