List the 3 main gasses in the atmosphere and their relative percentages

The question says.'Samuel ate some vegetable soup. What process is at work to allow Samuel to break down the soup so that his body will be able to produce energy for growth. The correct option is D. Digestion is the process by which the body mechanically and enzymatically break down food products consumed into forms that are usable by the body. Digestion occurs in the alimentary canal, at the end of the process, the useful parts of the food will be absorbed while the unuseful part will be removed as waste. The body used the absorbed nutrients for energy and growth.