There was also a study of some moth or butterfly in , I think England, during the industrial revolution.
It was mostly gray with some black but as the years went by and coal soot covered cities it’s coloration changed to mostly black with only small gray areas.
There was also a study of some moth or butterfly in , I think England, during the industrial revolution.
It was mostly gray with some black but as the years went by and coal soot covered cities its coloration changed to mostly black with only small gray areas.