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

[Q]: The main advantage of urea is its very low toxicity.
[A]: The main advantage of urea is its very low what?

[Q]: Microevolution is the process by which organisms change in small ways over time.
[A]: What is the process by which organisms change in small ways over time?

[Q]: Transform fault type of earthquake has a shallow focus because the plates meet near the surface.
[A]:
What type of earthquake has a shallow focus because the plates meet near the surface?