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

Q: Most of the digestion reactions occur in the small intestine.

A: Where do most of the digestion reactions occur?
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Q: Are humans a new or old species on the earth?

A: Are humans a new or old species on the earth?
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Q: Individual nucleotides can be linked together through their phosphate groups to form nucleic acid polymers.

A:
Individual nucleotides can be linked together through their phosphate groups to form?
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