Carbon is the common element found in all organic molecules. During respiration, animals excrete (or exhale) carbon in the form of a gas, carbon dioxide (CO2).
Explanation:All animals exhale out carbon dioxide during respiration. Carbon dioxide is a byproduct of respiration, it Is harmful If it stays in the body for long and needs to be excreted out from the body
Plants instead of excreting out carbon dioxide use it produce glucose and oxygen, that is later on used by the animals themselves
