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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 6013 px × 2906 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |