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Learn about different animals and the food they eat with this guide.

Learn how muscles work with this guide.

Learn about the digestive system with this guide.

Learn about vertebrates with this guide.

Learn about invertebrates with this guide.

Learn about teeth with this guide.

Learn about food chains in this guide.

Learn how humans change during their lifetime with this guide.

Learn about your skeleton with this guide.

Learn about the circulatory system with this guide.

Learn about the effects of diet, exercise and drugs with this guide.