Subject: How do scientists know if it is a freshwater or saltwater fossil?
Date: Wed Feb 20 10:07:27 2002
Posted by Kelly
Grade level: 7-9
School: Caldwell Middle School
City: Caldwell State/Province: Texas
Area of science: Earth Sciences
In learning about plate tectonics, one clue is a freshwater animal fossil found
in South America & Africa. How could scientists tell it was freshwater & not
Re: How do scientists know if it is a freshwater or saltwater fossil?
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