The series of predictable changes that occur in a community over time

The series of changes that occur in an area where no soil or organisms exist

The first species to populate the area

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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Section 4

Changes in Communities

Question	Answer
Succession	The series of predictable changes that occur in a community over time
Primary succession	The series of changes that occur in an area where no soil or organisms exist
Pioneer species	The first species to populate the area
Secondary succession	The series of changes that occur in an area where the ecosystem has been disturbed but where soil and organisms still exist