Chronic exposures are: a. amounts of radiation received over a very long period of time b. acute exposures which affect only critical organs of the body c. amounts of radiation received over a short period of time d. acute exposures which affect all parts of the body

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.

which of what? i am confused