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

[Q]: Cells are small biological structures that make up all living things, including the human body.
[A]: What small biological structures make up all living things, including the human body?


[Q]: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the capillaries.
[A]: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the what?


[Q]: Do changes to rocks happen quickly or slowly?
[A]:
Do changes to rocks happen quickly or slowly?