instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Biodiversity is the term for the measurement of the amount of variation of species in a given area.
answer:
What is the term for the measurement of the amount of variation of species in a given area?


question:
Skeletal muscles must work in pairs to move bones back and forth at a joint because they can only contract.
answer:
Skeletal muscles must work in pairs to move bones back and forth at a joint because they can only do what?


question:
A combination reaction is a reaction in which two or more substances combine to form a single new substance.
answer:

What kind of reaction is a reaction in which two or more substances combine to form a single new substance?