When you breath in, you take in air which is mostly nitrogen, some oxygen, and very little carbon dioxide.
(you; breath; in) (you; take in; air which is mostly nitrogen, some oxygen, and very little carbon dioxide; T:When you breath in) (air; is mostly; nitrogen, some oxygen, and very little carbon dioxide)
you you air
breath take in is mostly
in
air which is mostly nitrogen, some oxygen, and very little carbon dioxide T:When you breath in
nitrogen, some oxygen, and very little carbon dioxide