Unpindownable

In the age before the information age
Making history and living for the days
We told our stories then in oh so many ways
We were unpindownable

The moth it changed between the chimney and the tree
I grew feet so I could crawl out from the sea
No-one dares to tell me what I’m going to be
For I am unpindownable.


The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths were light-coloured, which effectively camouflaged them against the light-coloured trees and lichens which they rested on.
However, due to widespread pollution during the industrial revolution in England, many of the lichens died out, and the trees which peppered moths rested on became blackened by soot, causing most of the light-coloured moths to die off due to predation.
At the same time, the dark-coloured, or melanic,  moths flourished because of their ability to hide on the darkened trees.
Since then, with improved environmental standards, light-coloured peppered moths have again become common, and as a result of the relatively simple and easy-to-understand circumstances of the adaptation, the peppered moth has become a common example used in explaining or demonstrating natural selection.