Posted by Jennifer on Sunday, January 3, 2010 at 9:49am.
It would help to know how many spaces are required and what letters you already have!
For the first one, look here:
http://www.google.com/search?q=what+blocks+prokaryotic+ribosomes+but+not+eukaryotes&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
For the second here:
http://www.google.com/search?q=proteobacteria+%26+nitrogen&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
For the third here:
http://www.google.com/search?q=earliest+life+form+obtaining+energy+from+inorganic+compounds&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
Good luck!
Sra
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