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How Many Layers of Skin Do You Have?
What’s the Best Way to Protect Your Skin from the Sun?
9 Fun Facts About Skin that Might Surprise You
Why Do People Have Different Skin Colors?
Why Do People Have Fingernails and Toenails?
How to Stop Biting Your Nails
Amazing Organs
Best Science Books
Fun Activities
Interesting Facts
*Human Body Learning Lab Book*
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