8. Why does the blood turn dark red as it circulates through the body?
A. It starts to clot.
B. It gets old and dirty as it flows through the body.
C. The oxygen in it is replaced with carbon dioxide.
D. The farther the blood from the heart, the darker red it is.
A. It starts to clot.
B. It gets old and dirty as it flows through the body.
C. The oxygen in it is replaced with carbon dioxide.
D. The farther the blood from the heart, the darker red it is.
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Answer:
C
Explanation:
The farther blood is from the heart, the more dark red it is. Blood turn dark red as it circulates through the body because oxygen in it is replaced with carbon dioxide.