Term
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Definition
| the variety of life in an area |
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Term
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Definition
| disappearance of a species when the last of its members dies. |
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Term
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Definition
| when the populationof a species begins declining rapidly |
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Term
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Definition
| when numbers become so low that extinction is possible |
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Term
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Definition
| the separation of wilderness areas from other wilderness areas |
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Term
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Definition
| the different conditions along the boundaries of an ecosystem |
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Term
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Definition
| the damage to a habitat by pollution |
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Term
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Definition
| rain, snow, sleet, and fog with low pH values |
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Term
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Definition
| the part of the atmosphere that acts as a sunscreen to protect living organisms from damaging or lethal doses of ultraviolet radiation |
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Term
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Definition
| organisms that are not native to a particular area, growing at an exponential rate due to a lack of competition and a lack of predators, replacing niches of native species. |
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Term
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Definition
| organisms that are natural to an area |
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