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

[Q]: When magma heats groundwater, it may come to the surface as a hot spring or a geyser.
[A]: When magma heats groundwater, it may come to the surface as a hot spring or a what?


[Q]: Carried through body happens if cancer cells enter the blood stream.
[A]: What happens if cancer cells enter the blood stream?


[Q]: Sexual reproduction, in general, relies on sets of cells that are precursors for eggs and sperm.
[A]:
What kind of reproduction, in general, relies on sets of cells that are precursors for eggs and sperm?