Audience: Students; Grades: 4-8; Subject: Science. (2003) Investigates the composition of food and defines the main types of nutrients needed to maintain proper nutrition and health. Identifies the organs of the digestion system and excretory system, including the esophagus, stomach, large and small intestines, lungs, kidneys, and liver. Differentiates between mechanical and chemical digestion, illustrating how food breaks down during the digestive process. Explains how the body obtains nutrients from food and how wastes are excreted from the body. Program concludes with 10-question video quiz. For the teacher's guide go to: https://drive.google.com/folderview?id=0B9ZT7PYcIjLfYVVuY0djdlI3eUU&usp=sharing