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Relationships Among Organisms - Question 20 | CA-Biology B-CR | Revolt

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Answers CA-Biology B-CR Relationships Among OrganismsQuestion 20

20

QuizMultiple Choice

Relationships Among Organisms

Question 20 of 35 • CA-Biology B-CR

Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

Answer

A

carbon dioxide

B

oxygen

C

nitrogen

D

hydrogen

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