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

[EX Q]: cloning allows us to make copies of traits
[EX A]: What allows us to make copies of traits?

[EX Q]: fly infection is established when flys enter through the skin
[EX A]: What is established when flys enter through the skin?

[EX Q]: navigation requires charts for travelling.
[EX A]:
What does navigation require for travelling?