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

Ex Input:
Population is an important level of organization in ecology and the unit of microevolution.

Ex Output:
What is an important level of organization in ecology and the unit of microevolution?


Ex Input:
Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.

Ex Output:
What hydrocarbons contain only single bonds between carbon atoms?


Ex Input:
Bile acids, needed to emulsify lipids, are stored in the body in the gallbladder.

Ex Output:

Where are bile acids, needed to emulsify lipids, stored in the body?