BI-2236
Aerobic respiration
Biology · Secondary 4 · Hard · Aerobic respiration
A student compares the air she breathes in with the air she breathes out.
Which row correctly describes the changes in oxygen and carbon dioxide percentages from inspired air to expired air?
Which row correctly describes the changes in oxygen and carbon dioxide percentages from inspired air to expired air?
- oxygen decreases, carbon dioxide decreases
- oxygen decreases, carbon dioxide increases
- oxygen increases, carbon dioxide decreases
- oxygen increases, carbon dioxide increases
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