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

[Q]: Producing sperm and secreting testosterone are the main functions of male reproductive system system.
[A]: Producing sperm and secreting testosterone are the main functions of what system?


[Q]: Does water get colder or warmer the deeper you go?
[A]: Does water get colder or warmer the deeper you go?


[Q]: Soil, for human purposes, is a(n) nonrenewable resource.
[A]:
What kind of a resource is soil, for human purposes?