__________ are the compounds made up of carbon,hydrogen and oxygen.
Carbohydrates
Carbohydrates are the compounds made up of carbon, hydrogen and oxygen. Carbohydrates are the energy giving food, and they are present mainly in cereals, sugar and potatoes. The simplest carbohydrate is glucose. In our body, the complex molecules of carbohydrate break up into glucose, which then breaks down by the action of oxygen to release energy along with carbon dioxide and water.