The graph illustrates how the volume of air in a person’s lungs varies during a $30\,\text{s}$ interval. During which time interval is the breathing rate highest?
- AV to W
- BW to X
- CX to Y
- DY to Z
Biology 5090 · O Level · Human gas exchange
Biology 5090 · O Level · Human gas exchange
The graph illustrates how the volume of air in a person’s lungs varies during a $30\,\text{s}$ interval. During which time interval is the breathing rate highest?