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

[EX Q]: Socket secures teeth in the mouth.
[EX A]: What secures teeth in the mouth?

[EX Q]: Southern asia does the most important monsoon in the world occur.
[EX A]: Where does the most important monsoon in the world occur?

[EX Q]: A change of season and less food usually cause certain animals to migrate.
[EX A]:
Which two environmental changes usually cause certain animals to migrate?