Wednesday
April 23, 2014

Homework Help: science

Posted by vanessa on Thursday, December 19, 2013 at 9:13am.

2. Describe the two most important events in the history of animal life that occurred at the beginning and at the end of the Paleozoic era. List and briefly outline the six different periods into which the Paleozoic era is divided.
so i cannot find it in my notes, and im struggling really bad please help.

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