Question

Lung always contain a residual volume of air during the breathing cycle.
Why?
(a) So that there is enough time for oxygen to be absorbed and for the carbon
dioxide to be released
(b) So that there is enough time for oxygen to be released and for the carbon
dioxide to be absorbed
(c) So that oxygen is absorbed property
(d) All of these
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Answer 1

Answer:

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Explanation:

(a) is correct. so that there is enough time for oxygen to be absorbed and carbon dioxide to be released.

Answer 2

@) is the correct ans

enough time for oxygen to be absorbed and for the carbon dioxide to be released.........