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

Q: Injuries can be prevented by getting proper rest and recovery.

A: Injuries can be prevented by getting proper what?
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Q: Water can be boiled to kill giardia and most other pathogens.

A: Water can be boiled to kill giardia and most other what?
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Q: Allele frequecy is the rate at which a specific allele appears within a population.

A:
What is the rate at which a specific allele appears within a population called?
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