7th grade unit 2: ecosystems lesson 3: succession and equilibrium vocabulary of instruction:
TRANSCRIPT
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7th Grade7th Grade
Unit 2: Unit 2:
EcosystemsEcosystems
Lesson 3: Lesson 3:
Succession and EquilibriumSuccession and Equilibrium
Vocabulary of Instruction:Vocabulary of Instruction:
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Climax Community•Is a stable
group of plants and animals that is the end result of the succession process.
Climax C
ommunity
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Equilibrium• Is the condition
of a system in which competing influences are balanced
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Pioneer Species• Are those
organisms, usually plants, that colonize barren rock or lava during primary succession.
• Examples:MossesLichensFernsweeds
Mosses
Weeds
Lichens
Ferns
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Primary Succession
• Is the earliest phase of ecosystem development.
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Secondary Succession
• Describes the changes in the kinds of plants and animals that live in a particular community over time.
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Succession• Directional, orderly process of
change in a living community in which the community modifies the physical environment to eventually establish an ecosystem which is as stable as possible at the site in question.