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Hi - Why don't you try searches on Google or Google Scholar (for a start) on... photosynthesis phototaxis phototropism photoperiodism You'll be overwhelmed, for better or worse. Steven Vogel Quoting elan lior <[log in to unmask]>: > Dear Colleagues/ Friends, > > I am seeking examples and information on instances in nature where > light affects matter, for a course in artifact design. > > These could be cases like the sunflower, or any other case where > reciprocal relations between light and matter are evident, be it > flora or fauna. > > > Any such or related Information would be greatly appreciated! > Thanks and Best wishes > > Elan > > > > --------------------------------- > Looking for last minute shopping deals? Find them fast with Yahoo! Search.