instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Changing the shape of an elastic material gives it potential energy.
answer:
Changing the shape of an elastic material gives it what type of energy?


question:
2 hydrogen, 1 oxygen atoms combine to make up a molecule of water.
answer:
What atoms combine to make up a molecule of water?


question:
To prevent dehydration is water important for the nervous system.
answer:

Why is water important for the nervous system?