Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

[Q]: Fact: chlorophyll is used for absorbing light energy by plants
[A]: The leaves of a plant benefit from?


[Q]: Fact: cycles of freezing and thawing water cause ice wedging
[A]: Ice wedging is caused by cycles of freezing and thawing of what?


[Q]: Fact: if a living thing dies then that living thing is dead
[A]:
What is an example of the fact that a thing is dead once it dies after having previously lived?