NOVA Online: Odyssey of Life (see bottom of page for navigation)
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You think there aren't any teeny, tiny bacteria inside you? Well, it's no lie. You just can't see them. Even if your skin and stuff weren't in the way, you still wouldn't be able to see them. They can only be seen with something that magnifies them to make them appear bigger than they really are.

If you say so. Take me back.





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