A chemical compound composed of two oxygen atoms linked to a single carbon atom by covalent bond, and essential to many biochemical and biological processes.
In animals, carbon dioxide is a chemical compound that accumulates in the tissues and removed from the body when an animal exhales. It is therefore a metabolic byproduct of carbohydrate metabolism.
In plants, carbon dioxide is an important reactant to produce sugars by photosynthesis.
Chemical formula: CO2
Also called: carbonic acid gas