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mrs.vazquez LSG
CH3 SEC1
4
Science
6th Grade
04/08/2008
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Term

Between          and          plant species have been named

Definition
260,000   and  300,000
Term
name 4 things that plant calls have
 Definition
  1. nucleus
  2. cell wall
  3. cell membraine 
  4. and other structures
Term
how old are the oldest fossils
 Definition
420 million years old
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