Which are part of the skeletal system? Select all that apply. Femur
Tibia
Heart
Ulna
Radius
Lungs
Fibula

Answer is in the file below

cutt.ly/tz3yDpb

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.

hey, the answer to your question would be a.) progressive resistance training.