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A little girl and her father take a quiet walk and identify the sounds around them.

A simple introduction to the composition and functions of blood.

Explains the processes by which a hamburger and other foods are used to make energy, strong bones, and solid muscles as they pass through the digestive system.

A simple explanation of the structure of the heart and how it works.

Explains the basic properties of skin, how it protects the body, and how it can vary in color.

Elementary discussion of the importance of sleep and what happens to our brains and bodies during slumber.

Explains the processes by which a hamburger and other foods are used to make energy, strong bones, and solid muscles as they pass through the digestive system.

Discusses the importance of sleep and what happens to our brains and bodies during slumber.

Explains how people create too much waste and how waste is now recycled and put into landfills.

Describes the process of hearing, during which sound waves travel through the ear and become signals the brain interprets as individual sounds.

Explains the mechanics of speech: what body parts are used, and how different sounds are formed.

Describes how the brain receives and sends messages via the nervous system.

Discusses the growing garbage and trash problem in the United States and its possible solutions.