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

[Q]: Deletions remove one or more nucleotides from the dna
[A]: Deletions remove one or more what from the dna?


[Q]: Oxygen is transferred through capillaries.
[A]: Which blood vessels is oxygen transferred through?


[Q]: Rounding is when one or more ending digits are dropped to get the correct number of significant figures.
[A]:
What is it called when one or more ending digits are dropped to get the correct number of significant figures?