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

Example Input: Fractional crystallization is the separation of compounds on the basis of their solubilities in a given solvent.
Example Output: What is the separation of compounds on the basis of their solubilities in a given solvent?

Example Input: A pregnant woman should avoid toxic substances while pregnant.
Example Output: What should a pregnant woman avoid while pregnant?

Example Input: Animal behavior is the way animals act either alone or with other animals called.
Example Output:
What is the way animals act either alone or with other animals called?