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

[EX Q]: The high points in a transverse wave are called crests.
[EX A]: What are the high points in a transverse wave called?

[EX Q]: Compound does the precise pattern of a crystal depend on.
[EX A]: What does the precise pattern of a crystal depend on?

[EX Q]: Environmental changes is most responsible for the extinction of most species of plants and animals that have lived on earth.
[EX A]:
What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?