When kettle-well recaptured the marked moths what did he find?

When Kettlewell recaptured the marked moths, he found that the proportion of dark-colored moths increased in polluted areas, while lighter-colored moths were more prevalent in cleaner environments. This observation supported the theory of natural selection, demonstrating how environmental changes can influence the survival and reproduction of species. His experiments illustrated the impact of industrial pollution on the peppered moth population, highlighting the adaptive advantages of coloration in different habitats.