What do you think of when you hear the word “tortoise”? The giant tortoises that lumber along like tanks over the Galapagos Islands in the Pacific and the Seychelles in the Indian Ocean? The gopher ...
CC0 Usage Conditions ApplyClick for more information. Did you know tortoise shells are made up of a hard substance that we have on our own bodies? A caretaker at Smithsonian's National Zoo explains.
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