Regulations on legal drugs primarily exist to keep these drugs away from

Regulations on legal drugs exist to keep them away from teens and children.  Hope this helps and good luck on the rest of your homework!

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.

perspiration and respiration.