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Expiration is necessary in order to _____. perspire remove CO2 obtain O2 relax emotions
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5 votes
Expiration is necessary in order to _____.

perspire
remove CO2
obtain O2
relax emotions

User Asad Nauman
by
8.3k points

2 Answers

2 votes

Answer:

I believe it is Remove C02

Step-by-step explanation:

User Anuj Patel
by
8.1k points
2 votes
Remove CO2 is the answer. When we expire, we exhale CO2 so expiration is necessary in order to REMOVE CO2.
User JonesCola
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8.1k points
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