Your Breathtaking Lungs and Rocking Respiratory System (Your Brilliant Body) | Your Hardworking Heart and Spectacular Circulatory System | Your Mind-Bending Brain and Networking Nervous System | Your Strong Skeleton and Amazing Muscular System
About: Provides facts about the digestive system and how it works, explains how the human body processes food to get nutrients, and includes information on why a healthy diet is important.
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