Yes, it is true.
The classical example of natural selection can be explained by the response of a peppered moth Biston betularia due to industrial melanism in all parts of England. Industrial melanism is an adaptation where the moths that survived in the industrial areas developed melanin pigment to hide themselves from their predators.
Most of the peppered moths in the UK were white and very few were melanic (black). But, after their habitats become polluted by the coal-fired industries, the white moths were selectively picked up predators. The dark-colored moths were camouflaged very well by the blackened trees and their population increased rapidly.