An increase to 0.5% carbon dioxide in the air (from the normal 0.03%) makes a person breathe 10 times faster. Which alteration in homeostatic conditions in the blood would limit how long a person can hold their breath?

A. Lack of carbon dioxide raises the pH.
B. Lack of oxygen raises the pH.
C. Buildup of carbon dioxide lowers the pH.
D. Buildup of oxygen lowers the pH.
E. Buildup of nitrogen raises the pH.


C. Buildup of carbon dioxide lowers the pH.

Biology & Microbiology

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