yes
The air left in your lungs after exhaling is called "Expiratory Reserve".
A smoker's lungs look the same as a non-smoker's. Diseased lungs are coloured.
This disease is called emphysema. This happens when you breath out and your lungs don't contract like they normally do.
when lungs inhale oxygen what doesit exhale as waste
when you inhale your lungs expand when you exhale they deflate because the air leaves the lungs.
with your lungs
It is the natural elasticity of the lungs that allows us to exhale.
when lungs inhale oxygen what does it exhale as waste
When you exhale the diaghphram moves up and in and this proccess squeezes the air out of the lungs
If you're a non-smoker your lungs stay generally pink after death if not greyed out a little, but if your a smoker it'll vary on how heavy is the smoker on the cigarettes
Oxygen
carbon dioxide