Term
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Definition
| The study of how organisms interact with each other and with their environments. |
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Definition
| a group of individuals that interbreed and produce fertile offspring |
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Definition
| Members of a species that live in the same area at the same time. |
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Definition
| All of the populations in a particular area. |
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Definition
| Includes all of the living things and their physical environments within a particular area. |
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Definition
| Includes all parts of Earth that host life, with all of its organisms and environments. |
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Definition
| Parts of an ecosystem that are living or used to be living. |
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Definition
| Parts of an ecosystem that have never been living |
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Definition
| The specific environment in which an organism lives. |
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Definition
| Is anything an organism needs, including nutrition, shelter, breeding sites and mates. |
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Definition
| Describes the number of individual organisms present in a given population at a given time. |
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Definition
| Describes the number of individuals within a population per unit area. |
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Definition
| Describes how organisms are arranged within an area. |
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Definition
| Describes the relative numbers of organisms of each age within a population. |
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Definition
| Visual tools scientists use to show the age structure of populations. |
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Definition
| Proportion of males to females in a population. |
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Definition
| Shows how the likelihood of death varies with age. |
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Term
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Definition
| The arrival of individuals from outside a given area. |
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Term
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Definition
| The departure of individuals from a given area. |
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Definition
| A seasonal movement into and out of an area. |
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Term
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Definition
| When a population increases by a fixed percentage each year. |
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Term
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Definition
| Characteristics of the environment that limit population growth. |
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Definition
| the largest population size a given environment can sustainably support. |
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Definition
| Describes how a population's initial exponential increase is slowed and finally stopped by limiting factors. |
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Term
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Definition
| A factor that changes with the density of a population. |
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Term
| Density-independent Factors |
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Definition
| Limiting factors whose influence is not affected by population density. |
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Term
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Definition
| Maximum ability to produce offspring in ideal conditions. |
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