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

Microevolution is the process by which organisms change in small ways over time.
What is the process by which organisms change in small ways over time?

Plasma membranes encloses and defines the borders of cells.
What encloses and defines the borders of cells?

Face and ears parts of a human possess the highest concentration of thermoreceptors.
What parts of a human possess the highest concentration of thermoreceptors?