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adaptive radiation
a·dap·tive ra·di·a·tion


noun 
Definition:
 
diversification of forms: the developmental diversification of a group of organisms from an ancestral form into several different forms that adapt to different environments
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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