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

[Q]: Age causes reduction of elasticity in all organs.
[A]: What causes reduction of elasticity in all organs?

[Q]: Cloudy conditions will most likely result from a low-pressure weather system.
[A]: Which will most likely result from a low-pressure weather system?

[Q]: Ethical considerdations prohibits knocking out genes.
[A]:
What prohibits knocking out genes?