When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe? #NTA #NEET #NEETquestion #mcq #2021 #Biology - Study24x7
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When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe? #NTA #NEET #NEET...

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A

falling O2 concentration

B

rising CO2 concentration

C

falling CO2 concentration

D

rising CO2 and falling O2 concentration

NEET / Medical
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