He should lower the speed he is going on the steps that way his heart rate won't go up too fast.
Answer: To remove waste from the body
The Excretory system is responsible for the elimination of wastes produced by homeostasis.
Swimming?
lifting weights?
walking briskly?
jumping rope?
the answer is lifting weights
if it two answer need in the blank
it have to be lifting weights and jumping rope.
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Answer:
it is d because CONTRIBUTES to water pollution meaning what gosenwith it and littering the chemical will affect it
