Marion was burned by exploding gas while trying to start his lawn mower. He burned both legs above the knees up through his chest, half of both arms, and the perineal area. What percentage of his body did he burn?

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

Band cthe nucleus of the atom