BI-2244
Aerobic respiration
Biology · Secondary 4 · Hard · Aerobic respiration
A student compares the composition of inspired air and expired air in humans.
Which row correctly describes the changes in oxygen and carbon dioxide percentages from inspired to expired air?
Which row correctly describes the changes in oxygen and carbon dioxide percentages from inspired to expired air?
- oxygen increases, carbon dioxide decreases
- oxygen decreases, carbon dioxide increases
- oxygen and carbon dioxide both increase
- oxygen and carbon dioxide both decrease
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