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Answers FL-2000310-Biology 1 Unit TestQuestion 20

20

QuizMultiple Choice

Unit Test

Question 20 of 25 • FL-2000310-Biology 1

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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Unit Test - Question 20 | FL-2000310-Biology 1 | Revolt