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| Description: The milk carton had its original purpose modified during its history. The structure that was designed to efficiently carry milk has been modified to accommodate a bird's nest. Over evolutionary history, pre-existing structures have been modified for new functions.
Picture Stats: Views: 1234 Filesize: 81.25kB Height: 706 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=125 Keywords: An example of modification of a structure for a new function |