BY LETTER
Background Extinctions
Extinctions that occur continually throughout time. These extinctions are caused by small changes in climate or habitat, depleted resources, competition, and other changes that require adaptation and flexibility. Most extinctions (perhaps up to 95 per cent of all extinctions) occur as background extinctions.
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Development Notes
Text by M. Alan Kazlev
Initially published on 08 October 2001.
Initially published on 08 October 2001.
