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In the nine-teenth century the peppered moth , or Biston betularia, experienced a transformation in appearance solely due to pollution of the enviroment. Alighter version of the moth could be found in dorset, where pollution was non-existantas opposed to the darker version, which grew more common as time wnet on in highly industrialized locations. A man named H. B. Kettlewell conducted an experiment with this moth to determine how much their coloration impacted their ability to survive in their enviroment. The impact was a big one.

Photo Courtesy of: Randy Emmitt

http://www.rlephoto.com

 

Bugs in the Sky

By May R. Berenbaum