instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The long bone work as lever.
answer:
What type of function does the long bone perform?


question:
Instead of heat, organisms use catalysis to speed up reactions.
answer:
Instead of heat, organisms use what to speed up reactions?


question:
The term thermal expansion is used to describe the change in size or volume of a given mass with temperature.
answer:
What term is used to describe the change in size or volume of a given mass with temperature?