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

[Q]: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond.
[A]: What is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond?


[Q]: Cancer occurs most often in adults over fifty age.
[A]: Cancer occurs most often in adults over what age?


[Q]: How ice cores are important to the study of geologic history is best described as they contain evidence showing changes in the atmospheric composition over time.
[A]:
Which best describes how ice cores are important to the study of geologic history?