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

Input: Consider Input: An excellent solvent that holds heat well and allows hydrogen bonds, water substance has many properties critical to life.

Output: An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life?


Input: Consider Input: Hydras and sea anemones are examples of apolyp.

Output: Hydras and sea anemones are examples of what form?


Input: Consider Input: Estradiol causes the endometrium to thicken during a menstrual cycle.
Output: What causes the endometrium to thicken during a menstrual cycle?