Succession -the process by when structure of a biological community evolves over time.
Primary Succession - The series of changes that occur in an area where no soil or organisms live.
Secondary Succession - The series of changes that occur in an area where the ecosystem has been disturbed, but where organism still exist.
Climax Community - A stable community that no longer goes through major ecological changes.
The difference between Primary and Secondary Succession, In primary succession no soil or organisms are present. In secondary succession soil and organisms are present.