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PSSA Vocab Unit 6
Term | Definition |
---|---|
evolution | processchangeexplainswhywhatseetodaydifferentwhatexistedinthepast;itincludes changes in the galaxies, stars, solar etc on earthBiological evolutionis change in hereditarycharacteristics groups of organisms over the course of generations. |
extinction | The complete elimination of a species from the earth. |
endangered species | A species that is in danger of extinction throughout all or a significant portion of its range. |
equilibrium | The ability of an ecosystem to maintain stability among its biological resources (e.g., forest, fisheries, crops) so that there is a steady optimum yield. |
sustainability | The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained. |
succession | The series of changes that occur in an ecosystem with the passing of time. |