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gradualism |
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gradualism
Geology the theory that explains major changes in rock strata, fossils, etc. in terms of gradual evolutionary processes rather than sudden violent catastrophes gradualism [′graj·ə·wə‚liz·əm] (evolution) A model of evolution in which change is slow, steady, and on the whole ameliorative, resulting in a gradual and continuous increase in biological diversity. Also known as phyletic gradualism. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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