By mass, oxygen
By atoms, hydrogen
cartilage
Water is the most common molecular subsance found in the human body(~98%). and phosphorous is the most abundant element in human body.
the most common thing on earth crust as well as in human body is water .
calciumCalcium
That is calcium.
Calcium
calciumCalcium
calciumCalcium
calcium
calcium
calciumCalcium
calciumCalcium