(Paperback)

You've seen your own blood, when you have a cut or a scrape. You can see the veins in your wrist, and you've seen the scab that forms as a cut heals. But do you know what blood does for you Without blood, you couldn't play, or grow, or learn. How does your body use blood Read and find out! Age 10+.

(Paperback)

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.