Question

why is the percentage of oxygen content less and carbon dioxide content more in exhaled air​

Answer 1

Answer:

because oxygen is used Up by our body so there is less oxygen in axhaled air

Answer 2

Because our body uses the oxygen and exchange it with carbon as a result our body gives out carbon dioxide.

Here the oxygen is less because we use oxygen and carbon is more because our body adds carbon due to which we give out carbon dioxide.

hope it helps...