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

[EX Q]: Radioactive decay can give off energy and particles.
[EX A]: Radioactive decay can give off energy and what else?

[EX Q]: Cranium (skull) is the term for the skeletal structure of the head that supports the face and protects the brain.
[EX A]: What is the term for the skeletal structure of the head that supports the face and protects the brain?

[EX Q]: Beer brewers add yeast to the wort to to make alcohol.
[EX A]:
Why do beer brewers add yeast to the wort?