What is the role of carbon dioxide in respiration?

Answer

Nothing, it is the final stage of the respiratory cycle, and it merely needs to be exchanged with oxygen.
Q&A Related to "What is the role of carbon dioxide in respiration..."
After carbon dioxide inhalation the bodies respiration system
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Joseph Black, a Scottish chemist and physician has been identified as the individual who first identified carbon dioxide during experiments in the 1750s.
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It is what is left of sugar after you used oxygen to burn it and use the energy which is freed in the process for your own body's purposes.
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