
Peppered Moths

by Science Photo Library
Title
Peppered Moths
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Two peppered moths (Biston betularia). Two forms of this moth occur, a pale form (top) and a dark form (bottom). The dark form became dominant in parts of northern England after the industrial revolution, when trees were covered by black soot. This phenomenon is known as industrial melanism, and is an example of natural selection.
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September 12th, 2018
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