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succession
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9
Science
8th Grade
03/29/2012

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Term
Succession
Definition
a series of predictable changes that occur in a community over time
Term
Primary and Secondary Succession
Definition
What are the two types of successions?
Term
Primary Succession
Definition
the series of changes that occur in an area where no ecosystem previously existed
*change occurs slowly over hundreds of years
*the end result is a balanced, biodiverse climax community
Term
Biodiversity
Definition
the number of different species in an area
Term
Inerdependent & sustainability
Definition
all species in an ecosystem are _____x______, so when ecosystems are not biodiverse, ______x_____ becomes threatened and the ecosystem may collapse
Term
Disturbance
Definition
a climax community will remain stable (in equilibrium) unless a _____x_____ upsets the balance
Term
Secondary succession
Definition
the series of changes that occur after a disturbance in an existing ecosystem, disturbances can include... natural events and human activities
*change occurs faster than in primary succession because soil already exists
*it restores an area to a balanced climax community
Term
Natural events
Definition
Fires
Hurricanes
Tornadoes
Term
Human activities
Definition
Farming
Logging (clear cutting)
Mining
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