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

Q: Optics explains the behavior of visible light and electromagnetic waves.

A: What type of physics explains the behavior of visible light and electromagnetic waves?
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Q: Absorption is the process by which the substances you consume are taken up by the blood.

A: What is the process by which the substances you consume are taken up by the blood?
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Q: A colony refers to a group of individual organisms of the same species that live closely together.

A:
What refers to a group of individual organisms of the same species that live closely together?
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