BI-1010
Aerobic respiration
Biology · Secondary 3 · Hard · Aerobic respiration
A student compares the air she breathes in with the air she breathes out at rest. Which row correctly describes the changes in oxygen and carbon dioxide percentages in expired air compared to inspired air?
- oxygen: higher; carbon dioxide: lower
- oxygen: lower; carbon dioxide: higher
- oxygen: same; carbon dioxide: higher
- oxygen: higher; carbon dioxide: same
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