What is the process that refers to a series of processes that enable body tissues and organs to grow and develop?

I believe that the answer would be Morphogenesis. Hope this Helps:)))

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)