Question

4. The blood vessels, heart and the blood make up

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10 points
a. 1/3 of our body
b. the respiratory system
c. 1/4 of our body
O d. the cardiovascular system

Answer 1

D): the cardiovascular system because the blood vessels, heart and blood make up that system

Answer 2

D, the cardiovascular system

Step-by-step explanation:

The Cardiovascular System is the system at which blood circulates through our body