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A group of individuals of the same species occupying an area |
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| Number of individuals in an area |
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An increase or decrease of the number of individuals in a population |
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| Population size increases due to... |
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| Population size decreases due to.. |
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Definition
| Movement of organisms into an environment |
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| Movement of organisms out of a population |
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| Number of births equals the number of deaths |
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The maximum number of individuals an environment can support |
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| A factor that causes population growth to decrease |
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A limiting factor that depends on population size
Ex. competition, disease, food supply |
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| Density-Independent Factor |
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Definition
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A limiting factor that affects all populations regardless of the population size
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Ex. storms, fire, flood, pollution, tornado
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Definition
| The study of human population growth |
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The population of a country broken down by gender and age group |
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