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: Ectothermic vertebrates control body temperature to just a limited extent from the outside by changing behavior.

Answer: What type of vertebrates control body temperature to just a limited extent from the outside by changing behavior?

Question: Single-celled organisms and multicellular organisms have this in common: both have a way to get rid of waste materials.

Answer: Which characteristic do single-celled organisms and multicellular organisms have in common?

Question: Alternative current is produced when a magnet or coil moves back and forth repeatedly.

Answer:
Alternative current is produced when a magnet or coil does what?