Given a scientific question, generate a correct answer to it.

[Q]: What is the layer above the mesophere called?
[A]: stratosphere

[Q]: What is the term for the movement of molecules from an area of high concentration to an area of low concentration?
[A]: diffusion

[Q]: What term means the adjusting of systems within a cell in order to restore balance or maintain equilibrium?
[A]:
homeostatic regulation