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Campbell Biology Chapter 54
Ecosystems
8
Biology
Undergraduate 2
02/23/2008

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Term
Ecosystem
Definition
Consists of all the organisms living in a community as well as all the abiotic factors with which they interact.
Term
Primary Producers
Definition
Autotrophs
Term
Primary Consumers
Definition
Organisms that consumer primary producers.
Term
Secondary Consumers
Definition
Organisms that consume primary consumers.
Term
Tertiary Consumers
Definition
Organisms that consume secondary consumers.
Term
Detritivores
Definition
Consumers that gather their energy from detritus; aka decomposers.
Term
Detritus
Definition
Nonliving organic material.
Term
Primary Production
Definition
The amount of light energy converted to chemical energy (organical compounds) by autotrophs during a given time period in an ecosystem.
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