Question

why do we exhale air​

Answer 1

bec we can keep co2 inside our body as it can cause breathlessness hence we exhale it....and body only uses oxygen

Answer 2

The process of inhaling and exhaling is called breathing.

It is a very important process.

We inhale oxygen and exhale carbon dioxide.

Exhaling of carbon dioxide is vital as it is the impure air that is the used (waste) air that we don’t require.

Carbon dioxide is a by product of all the metabolic activities.