The circulatory system is system in the human body that provides a network through which our blood flows constantly.The human cardiovascular system is considered closed because there are no holes for blood to enter or leave the system. Correct answer: D
In the closed circulatory system the blood stays confined within the vessels and heart.
Answer:
My favorite snack is strawberries, there aren't really oils in them
Explanation:
The answer is b.proteins
because proteins <span>enhance the integrity of your bones</span>