Butterfly evolution is studied

University College London scientists say they've found why so many species of butterflies live in Central and South America, as compared with other places.

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<p><a href="http://www.physorg.com/news8759.html">Butterfly evolution is studied</a></p> <p>University College London scientists say they've found why so many species of butterflies live in Central and South America, as compared with other places.</p>