Carbon dioxide is needed to help oxygen get to the cells where it is needed for the proper functioning of every organ and system in the body.
(Carbon dioxide; is needed; to help oxygen get to the cells) (it; is needed; for the proper functioning of every organ and system in the body; L:the cells)
Carbon dioxide it
is needed is needed
to help oxygen get to the cells
for the proper functioning of every organ and system in the body L:the cells