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Key Terms
Key Terms
15
Biology
10th Grade
07/05/2006

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Term
commensalism
Definition
a relationship in which two organisms live in a community, and one benefits while the other gets no benefit and is not harmed
Term
emigration
Definition
the movement of animals out of an area
Term
energy pyramid
Definition
a diagram that shows energy loss in the food chain
Term
food chain
Definition
a pathway of energy and materials through a community
Term
food web
Definition
shows how energy is moved through a community
Term
habitat
Definition
the place where a plant or animal lives
Term
immigration
Definition
movement of animals into a population
Term
limiting factor
Definition
any condition that keeps the size of a population from increasing
Term
niche
Definition
the job of an organism in its community
Term
parasitism
Definition
a relationship between two organisms in which one is helped and the other is harmed
Term
population
Definition
a group of living things of the same species that live in an area
Term
predation
Definition
a relationship in the community in which one organism benefits and the other is harmed
Term
predator
Definition
an animal that hunts, kills, and eats another animal
Term
prey
Definition
the animal that the predator kills and eats
Term
primary consumer
Definition
animals that only eat plants
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