Industrial melanism is an excellent model to demonstrate the natural selection in action. Analyse the above statement critically. 

Industrial melanism is a phenomenon in which the frequency of dark-colored individuals in a population increases over time due to natural selection. This process was first observed in the peppered moth population in industrialized regions of England during the 19th and 20th centuries. The peppered moth (Biston betularia) has two distinct morphs, a light-colored morph and a dark-colored morph. Prior to industrialization, the light-colored morph was more common, as it _________ ____ ____ _____ ____ _____ ________ _________ _______ ___.
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