The digestive system's overall purpose for the body is to break down food create carbohydrates, proteins, and fats transform nutrients so that they can be absorbed into the blood make protein which builds and maintains the body

Answer;

break down food

Explanation;Digestive system performs specialized function of turning food into the energy needed for survival and packaging the residue for waste disposal. The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. Other functions include; Secretion of fluids and digestive enzymes and also Mixing and movement of food and wastes through the body.

Closing a ring restricts the rotation around individual car bon carbon bonds hope it will you !