instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Thermoregulation is the process when animals maintain an internal temperature.
answer:
What is the process when animals maintain an internal temperature?

question:
Nonvascular plants are the only plants with a life cycle in which the gametophyte generation is dominant.
answer:
What are the only plants with a life cycle in which the gametophyte generation is dominant?

question:
A crater can usually be found on the top of composite volcanoes.
answer:
A crater can usually be found on the top of what kind of volcanoes?