The breakdown of carbohydrates to carbon dioxide and water in the body is called

Carbohydrate Metabolism.

Explanation:

Carbohydrate metabolism refers to the biochemical processes which are accountable for metabolic formation, breaking down of carbohydrates and conversion of carbohydrates in the body of living organisms. I'm plants, carbohydrates are combined from carbon dioxide and water using photosynthesis, which store energy from sunlight. Animals use cellular respiration to break down stored energy in plants which they have consumed, for the availability of energy to cells. I'm human, carbohydrates are broken down to glucose, fructose and galactose through digestion. In aerobic respiration, glucose and oxygen undergo metabolism to release energy which carbon dioxide and water are secondary products.