The brain develops from to.
•front to back
•back to front
•side to side
•all at once

Back to front! The prefrontal cortex is the last to develop at around age 25.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.

gynecologist i believe