The integumentary system includes

question 2 options:

blood vessels

oil glands

hair

all of the above

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)

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Answer(cdc) the leading causes of cancer deaths in males are lung cancer,prostate cancer and colorectal cancer