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What breathe in oxygen (O2) and breathe out Carbon dioxide (CO2)??
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45 votes
What breathe in oxygen (O2) and breathe out Carbon dioxide (CO2)??

User Temo
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2 Answers

13 votes
13 votes

Answer:

Respiration

Step-by-step explanation:

because the role of the respiratory system is to inhale oxygen and exhale carbon dioxide were by the cells of the body use oxygen to perform certain functions that keeps us alive and the waste products created by our body cells after they've performed these functions is regarded as carbon dioxide.

User Tamizhgeek
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3.2k points
22 votes
22 votes

Answer:

The answer is Human beings

User Forkdbloke
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