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

[Q]: Fermat’s principle states that light will always take the path of the least amount of time.
[A]: Fermat’s principle states that light will always take the path of least amount of?


[Q]: Darwin believed in gradualism.
[A]: Did darwin believe in punctuated equilibrium or gradualism?


[Q]: Sudden and dramatic losses of biodiversity are called mass extinction.
[A]:
What are sudden and dramatic losses of biodiversity called?