Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Cells are small biological structures that make up all living things, including the human body.

Answer: What small biological structures make up all living things, including the human body?


Question: You call a group of organisms of the same species that live in the same area a(n) population.

Answer: What do you call a group of organisms of the same species that live in the same area?


Question: Echinoderms possess a water-based circulatory system.

Answer:
What kind of system do echinoderms possess?