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chapter 5.
flashcards for vocab words.
13
Biology
9th Grade
11/14/2011

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Term
Population Density.
Definition
refers to the number of individuals per unit area.
Term
Age Structure.
Definition
the number of males and females of each age a population contains.
Term
immagration.
Definition
the process of entering.
Term
emmigration.
Definition
the process of leaving.
Term
exponential growth
Definition
the larger a population gets the larger it grows with the ideal conditions and unlimited resources.
Term
logistic growth.
Definition
growth pattern in which a populations growth slows and then stops following a period of exponential growth.
Term
carrying capacity.
Definition
maximum number of individuals of a particular species that a particular enviroment can support
Term
limiting factor.
Definition
a factor that controls the growth of a population
Term
density-dependent limiting factor
Definition
limiting factor that depends on population density.
Term
density-independent limiting factor
Definition
Term
density-independent limiting factor
Definition
limiting factor that affects all populations in similar ways regardless of the population density
Term
demography
Definition
examines characteristics of human populations and attempts to explain how those populations will change over time.
Term
demographic transition
Definition
a dramatic change from high birthrates and death rates to low birthrates and death rates.
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