The diagram shows two variations of the same species of peppered moth
resting on a tree. Originally, most peppered moths were light-colored and
blended in with the light-colored bark of the trees in their environment.
Due to pollution during the Industrial Revolution, the trees became
blackened by soot. As a result, the population of light-colored moths
decreased, due to predators. At the same time, the population of dark-
colored moth increased, because they were less visible to predators. Which
process is responsible for this type of adaptation over time?
(Not drawn to scale)
natural selection
genetic engineering
metamorphosis
dynamic equilibrium