The heart is part of the cardiovascular system. This system acts as a “railway”, and delivers blood and oxygen to the rest of the body.
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There isn't any answer choices but hopefully this helps!
The skin acts as an external barrier to bacteria , preventing infection and protecting the internal organs . The skin also protects the body from ultraviolet radiation using the pigment barrier.
Explanation:
Answer:
yes
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I believe aerobic is important for our health because it uses oxygen tht we need to live and it releases large amount of energy which we need as human beings to do activities
Answer:
I think its either B or C.Hope that helps sorry
