the lungs will moves down when breathe out air
Expired air is air that you breathe out of your lungs.
We draw air into, and expel out of, the lungs.
The lungs act a bit like baloons. When you breathe in they will inflate, when you breathe out they will deflate. Using a balloon may be useful way to understand this, breathe into the balloon and it will inflate (this is what happens when you breathe in). Next, leave the air out (slowly) and this is what happens your lungs when you breathe out.
Yes, snakes breathe air and they have lungs.
A reptile has scales and lungs to breathe air
They breathe air with lungs.
You inhale them but your lungs only absorb the oxygen- they are exhaled again when you breathe out.
Yes. Alligators breathe with lungs.
Yes, they do. Ostriches are flightless birds (Aves) and breathe air with their lungs.
Do you mean all the oxygen? if so, no. mouth to mouth would not work if the body used it all up.
Bats breathe through their mouths and noses.
The diaphragm goes down, pulling air into the lungs. Your ribs expand, helping your lungs to expand also.