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

Q: Glycerol is a triol, an alcohol which contains three hydroxl functional groups.

A: Glycerol is a triol, an alcohol which contains three what?
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Q: The discovery of ribozymes nullified the idea that all biological catalysts are proteins.

A: What nullified the idea that all biological catalysts are proteins?
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Q: When the solubility of gases in liquids changes with increasing temperature, it decreases.

A:
How does the solubility of gases in liquids change with increasing temperature?
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