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

[Q]: Atp or adenozine triphosphate is used for most energy functions in organisms.
[A]: What molecule is used for most energy functions in organisms?


[Q]: Respiratory acidosis is considered to be problematic because excess co2 in blood.
[A]: Why is respiratory acidosis considered to be problematic?


[Q]: Snakes use their tongue to smell things.
[A]:
What do snakes use to smell things?