DENDROLOGY

Detailed explanation-1: -Carbon dioxide (chemical formula CO2) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms.

Detailed explanation-2: -A molecule of carbon dioxide contains one carbon atom and two oxygen atoms. Hence it can be expressed as CO2.

Detailed explanation-3: -Carbon Dioxide (CO₂) is a chemical compound consisting of one carbon atom and two oxygen atoms.

Detailed explanation-4: -Abbreviation for carbon dioxide: gas naturally produced by animals during respiration and through decay of biomass, and used by plants during photosynthesis.

Detailed explanation-5: -Molecular formula of carbon dioxide: CO2. The valency of carbon is 4 and that of oxygen is 2.