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Moss/Rowlands Chapter 5
Populations
13
Biology
10th Grade
08/23/2014

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Term
Population
Definition
Density The number of individuals per unit area.
Term
Immigration
Definition
Movement of individuals into an area, is another factor that can cause a population to grow.
Term
Emigration
Definition
Movement of individuals out of an area, can cause a population to decrease in size.
Term
Exponential Growth
Definition
Growth pattern which the individuals in a population reproduce at a constant rate.
Term
Logistic Growth
Definition
Occurs when a population's growth slows or stops following a period of Exponential Growth
Term
Carrying Capacity
Definition
Largest number of individuals of a population that a given environment can support.
Term
Limiting Factor
Definition
Factor that causes population growth to decrease.
Term
Density-dependent
Definition
Limiting Factor Limiting factor that depends on population size.
Term
Predator-prey Relationship
Definition
Mechanism of population control in which a population is regulated by predation.
Term
Density-independent Limiting Factors
Definition
Limiting factor that affects all populations in similar ways, regardless of population size.
Term
Demography
Definition
Scientific study of human populations.
Term
Demographic Transition
Definition
Change in population from high birth and death rates to low birth and death rates
Term
Age-structure Diagrams
Definition
Graph of the number of males and females within different age groups of a population.
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