0
hygiene,diet,excercise,and rest
Mostly water (70%),
the rest are proteins, fats, and minerals.
protection, structure, uh i can't remember the rest sry
The ozone layer has no components. It is a layer of relatively normal atmosphere, like the rest of the atmosphere... but the ozone is increased from near zero to 9 ppm.
base
shoulder
elbow
forearm
rest