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What is the primary role of the respiratory system in living organisms? a. to make carbon dioxide b. to obtain oxygen c. to use up nitrogen d. to find hydrogen

What is the primary role of the respiratory system in living organisms? a. to make carbon dioxide b. to obtain oxygen c. to use up nitrogen d. to find hydrogen
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What is the primary role of the respiratory system in living organisms?

a. to make carbon dioxide
b. to obtain oxygen
c. to use up nitrogen
d. to find hydrogen

asked
User The Artist
by
7.6k points

1 Answer

6 votes
b to obtain oxygen
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answered
User Shangwu
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8.5k points
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