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Video Description
Meet Earth’s oldest living inhabitants: the 250-million-year-old horseshoe crab, the 350-million-year-old coelacanth, and the Archaea, a tiny, ancient class of microorganisms with a taste for extreme environments. These prehistoric creatures haven’t changed in eons, but the way scientists study them has. Discover what each can teach us about our past and our future.
The Comprehension Questions are available to download as an RTF file. You can save the file to your
desktop and open it in a word processing program.
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