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

[Q]: A collapsing nebula leads to nuclear fusion process.
[A]: A collapsing nebula leads to what process?


[Q]: Platelets blood component serves both structural and molecular functions in blood clotting.
[A]: What blood component serves both structural and molecular functions in blood clotting?


[Q]: Are the majority of archaea chemotrophs or photosynthetic?
[A]:
Are the majority of archaea chemotrophs or photosynthetic?