Escriba las ventajas y desventajas de los
métodos
anticonceptivos
basados en
hormonas, como las
píldoras
anticonceptivas, los
implantes y un
parche.

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