BI-1051
Oxygen debt
Biology · Secondary 3 · Medium · Oxygen debt
A person runs a 200 m sprint and then breathes heavily for several minutes after stopping. Which statement best explains this heavy breathing?
- To supply extra oxygen to break down lactic acid formed in muscles.
- To remove excess carbon dioxide produced only during rest.
- To cool the body by bringing in cold air.
- Because the lungs have been damaged by exercise.
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