Term
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Definition
| the number of individuals per unit area |
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Term
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Definition
| the number of males and females of each age a population contains |
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Term
immigration*
(im uh GRAY shun) |
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Definition
| a process that causes a population to grow due to indiviuals moving into range from elsewhere |
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Term
emigration*
(em uh GRAY shun) |
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Definition
| a process where a population may decrease in size if individuals move out of the population's range. |
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Term
exponential growth*
(eks poh NEN shul) |
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Definition
| the larger a population gets, the faster it grows |
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Term
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Definition
| occurs when a population's growth slows and then stops, following a period of exponetial (very rapid) growth |
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Term
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Definition
| maximum number of indivuals of a particular species that a particular environment can support |
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Term
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Definition
| a factor (cause) that controls the growth of a population |
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Term
| density-dependent limiting factor* |
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Definition
limiting factor that depends on population size
Example: competition, disease |
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Term
| density-independent limiting factors* |
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Definition
affects all populations in similar ways, regardless of the population size & density
Example:hurricanes |
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Term
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Definition
| scientific study of human populations |
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Term
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Definition
| a dramatic change from high birthrates & death rates to low birthrates & death rates |
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