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Definition
| the number of individuals of a species per unit of area or volume |
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Definition
| the model that represents the slowing of population growth as a result of limiting factors |
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Definition
-the number of individuals the environment can support
-the capacity at which logistic growth levels off at |
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Term
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Definition
| environmental factors that restrict population growth |
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Term
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Definition
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Term
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Definition
| the accelerating increase that occurs when growth is unlimited, the population multiplies by a constant rate |
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Term
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Definition
exponential growth
[image] |
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Term
| The 3 types of dispersion patterns |
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Definition
Uniform (regular), Random and Clumped
[image] |
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Term
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Definition
| the shift from high death and birth rates to low death and birth rates |
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Term
| age structure of a population |
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Definition
-the proportion of individuals in different age groups
-affects its future growth |
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Term
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Definition
| the number of births in a population |
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Definition
| the number of deaths in a population |
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Term
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Definition
| number of people moving into a population |
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Term
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Definition
| number of people moving out of a population |
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Term
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Definition
-growth has continued exponentially for centuries, standing now at about 6.4 billion.
-Expected to reach 7.3-8.4 billion by 2025 |
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Term
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Definition
-non-living chemical and physical factors in the environment.
-abiotic factors limit many natural populations |
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Term
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Definition
| factors related to, produced by, or caused by living organisms. |
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