Chapter 12 vocab first half
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Created by:
Basketballpro6 on November 28, 2010
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8 terms
Terms | Definitions |
|---|---|
 Local extinction | occurs when a species disappears from a part of its range but persists elsewhere |
| Ecological extinction | when so few members of a species are left that they are unable to carry out their role in an ecosystem |
| Biological extinction | species no longer found anywhere on earth; forever |
| Endangered species | a species whose numbers are so small that the species is at risk of extinction |
| Threatened species | a species that could become endangered in the near future |
| Instrumental value | the worth that something has because of its use |
| Intrinsic value | value of an organism, species, ecosystem, or the earth's biodiversity based on its existence, regardless of whether it has any usefulness to us |
| HIPPO | habitat destruction, invasive species, population, pollution, overharvesting (factors endangering species) |
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