Biology
Biology, 27.08.2019 22:30, floresvanexel4pejp1p

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?
carbon dioxide
oxygen
nitrogen
hydrogen

answer
Answers: 2

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Veins take blood back to the heart. which gas would be most abundant in a vein that takes blood from...

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