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

Example Input: A theory is another name for a broad explanation that is supported by a great deal of evidence.
Example Output: What is another name for a broad explanation that is supported by a great deal of evidence?

Example Input: Respiratory acidosis is considered to be problematic because excess co2 in blood.
Example Output: Why is respiratory acidosis considered to be problematic?

Example Input: Structural adaptations in flying animals often contribute to reduced body mass.
Example Output:
Structural adaptations in flying animals often contribute to reduced what?