During the respiration in animals, the exhaled air contains percentage of carbon dioxide than inhaled air.

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Solution

The correct option is A more
During respiration in animals, oxygen is taken in and carbon dioxide is given out.
And the exhaled air contains higher percentage of carbon dioxide than inhaled air.
This can be proved by -

Take limewater in two different beakers.

Exhale in one and inhale from another.

You will notice that $C O_{2}$ percentage in inhaled air is so less that it imposes no effect on the limewater.

However, exhaled air effectively turns limewater milky or cloudy.

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