Respired carbon dioxide is an important constituent in the carbonates of most air breathing animals but is much less important in the carbonates of most aquatic animals.
(Respired carbon dioxide; is; an important constituent in the carbonates of most air breathing animals) (Respired carbon dioxide; is; much less important in the carbonates of most aquatic animals)
Respired carbon dioxide Respired carbon dioxide
is is
an important constituent in the carbonates of most air breathing animals
much less important in the carbonates of most aquatic animals