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Chap 5/6 Vocab

TermDefinition
Population Density Number of individuals per unit area.
Population Distribution The way individuals are spaced out across their range.
Age Structure Number of males and females of each age in a population.
Immigration Movement of individuals into an area occupied by an existing population.
Emigration Movement of individuals out of an area.
Exponential Growth Growth pattern in which the individuals in a population reproduce at a constant rate.
Logistic Growth Growth pattern in which a population's growth slows and then stops following a period of exponential growth.
Carrying Capacity Largest number of individuals of a particular species that a particular environment can support.
Limiting Factor Factor that causes population growth to decrease.
Demography Scientific study of human populations.
Habitat Area in which an organism lives, including the biotic and abiotic factors that affect it.
Niche Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.
Competitive Exclusion Principle Principle that states that no two species can occupy the same niche in the same habitat at the same time.
Keystone Species Single species that is not usually abundant in a community yet exerts strong control on the structure of a community.
Symbiosis Relationship in which two species live close together.
Commensalism Symbiotic relationship in which one organism benefits and the other is neither helped nor harmed.
Mutualism Symbiotic relationship in which both species benefit from the relationship.
Parasitism Relationship in which one organism lives inside or on another organism and harms it.
Primary Succession Succession that occurs in an area in which no trace of a previous community is present.
Secondary Succession Type of succession that occurs in an area that was only partially destroyed by disturbances.
Biodiversity Total of the variety of organisms in the biosphere.
Resilience Describes the ability to recover after a disturbance; the ability to deal with change and move on.
Created by: kdulin
 

 



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