Given a statement, generate a question such that the answer is contained in that statement.

[EX Q]: Cyclospora is not a virus
[EX A]: What is not a virus?

[EX Q]: detailed observation of galaxies requires light
[EX A]: What is required for detailed observation of galaxies?

[EX Q]: fish secrete a mucous covering over their exterior to help protect from predators and parasites and reduce friction with the liquid substance they live in.
[EX A]:
What do fish secrete over their exterior to help protect against predators and parasites?