

It's the largest human organ and keeps everything else is place--what is it? It's skin! And there's a lot more to it than meets the eye. In fact, microscopic bugs, fungus, and bacteria may all be found on the skin. Readers travel across this large body part with some helpful,...

It's the largest human organ and keeps everything else is place--what is it? It's skin! And there's a lot more to it than meets the eye. In fact, microscopic bugs, fungus, and bacteria may all be found on the skin. Readers travel across this large body part with some helpful,...