Question

Assertion: Lungs always contain a residual volume of air.



Reason: It provides sufficient time for oxygen to be absorbed and for carbon dioxide

to be released
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Answer 1

Answer:

a,

Explanation:

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Answer 2

Answer:

${\huge{\underline{\rm{\pink{Answer}}}}}$

Explanation:

Both assertion and reason are true and the reason is the correct statement for assertion.