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Chapter 1 Review
Creative Use of Vocab (Chapter 1) assignment
15
Science
7th Grade
09/22/2011

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Term
Abiotic Factor
Definition
The nonliving parts of an organisms habitat.
Term
Population
Definition
All the members of one species in a particular area.
Term
Community
Definition
All the different populations that live together in one area.
Term
Limiting Factor
Definition
An environmental factor that causes populations to deacrease. Limiting factors include space, food and water.
Term
Carrying Capacity
Definition
The largest population an area can hold.
Term
Niche
Definition
The role of an organism in its habitat.
Term
Adadptations
Definition
The behaviors and physical characteristics that allow organisms to lve successfuly in their environments.
Term
Competition
Definition
THe struggle between organisms to survive as they attempt to use the same limiting resource.
Term
Predation
Definition
An interaction in which one organism kills another for food.
Term
Symbiosis
Definition
A close relationship between two species that benefits at least one species.
Term
Succession
Definition
The series of predictable changes over time.
Primary Succession-The series of changes that occur in an area where no soil or organisms exist.

Secondary Succession-The series of changes that occur in an area where the ecosystem has been disturbed.
Term
Mutualism
Definition
A type of symbiosis in which both organisms benefit.
Term
Commensalism
Definition
A type of symbiosis in which one organism benefits but the other isnt harmed.
Term
Parasitism
Definition
A type of symbiosis in which one organism benefit but the other is harmed.
Term
Habitat
Definition
An environment that provides the things the organism needs to live, grow, and reproduce.
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