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

Ex Input:
Respiratory acidosis is considered to be problematic because excess co2 in blood.

Ex Output:
Why is respiratory acidosis considered to be problematic?


Ex Input:
Water leaves ponds and lakes through evaporation and also as outflow.

Ex Output:
Water leaves ponds and lakes through evaporation and also as what?


Ex Input:
All life is built around the element carbon.

Ex Output:

What element is all life built around?