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Chapter 20-4 Vocabulary

Chapter 20 Section 4 Vocabulary  

1.   Succession:  A series of predictable changes that occur in a community over time.  

2.   Primary Succession: The series of changes that occur in an area where no soil or organisms exist. 

3.   Pioneer Species: The first species to populate an area 

4.   Secondary Succession: The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist.

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