Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Most have cells that are not able to exchange gases with the outside environment do multicellular organisms need transport systems.

A: Why do multicellular organisms need transport systems?
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Q: The high points in a transverse wave are called crests.

A: What are the high points in a transverse wave called?
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Q: Any large molecule is referred to as a macromolecule.

A:
Any large molecule is referred to as what?
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