I made the changes I made because I felt that readers needed to know what types of extreme environments are classified as. I put a few examples of types of extreme environments to hopefully teach people the correct terms for types of extreme environments. I also added the information about the scientists studies because I wanted to bring up the point that there are studies going on today and things are being researched about this topic. — Preceding unsigned comment added by Jlom05 (talk • contribs) 16:30, 17 May 2013 (UTC)
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