Why the lungs always contain a residual volume of air ?
CBSE Class 10 Science PYQ · Life Processes · Respiration in human beings (respiratory system) · 2 Marks · March 2026 · Standard
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292 Marks · March 2026 · Standard
Why the lungs always contain a residual volume of air ?
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The lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. (2)