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

Input: Consider Input: The bird ancestor that lived in trees developed wings, which is commonly associated with birds.

Output: The bird ancestor that lived in trees developed what feature commonly associated with birds?

Input: Consider Input: Glycolysis is a series of reactions that is common to fermentation and cellular respiration.

Output: What series of reactions is common to fermentation and cellular respiration?

Input: Consider Input: Photoautotrophs and chemoautotrophs are two basic types of autotrophs.
Output: Photoautotrophs and chemoautotrophs are two basic types of what?