One of the respiratory purposes of the mouth is to warm and moisten the air for the lungs to draw the oxygen out of it. That's the reason why even when it is very cold outside, you can see your breath, because the warm moisture is "frozen" (basically).
Well, what happens,A lot of things happen. But, if you mean what happens because the air is cold, plants die, animals die, some say it's easier to breathe. (And it's usually cold when the barometric pressure is high.)
i take in air and bring out carbodioxide
the lungs will moves down when breathe out air
Because your body warms the air as you breathe in - the air retains heat as you exhale.
Expired air is air that you breathe out of your lungs.
That is where it breathe in water and if you blew air into its gill you would drown it in air
The air that you breathe out mixes with the rest of the air in your general vicinity, and will eventually mix with all the air in the Earth's atmosphere.
We draw air into, and expel out of, the lungs.
Yes.
what happens in cold and warm masses pressure
It just stays really cold because 0.0000000001 is higher then -1 and at -1 degrees air is just regularly cold
All that happens in the humans air sacks is that the air that u breathe gets stored up in there