Question

by talking is Industrial melanism as an example explain the concept of natural selection by evolution.

Answer 1

natural selection can be done by various concepts.....a) providing competition for living b) giving adverse temperature or surrounding

Answer 2

Industrial melanism is an example of thenatural selection of a particular form of an organism in an environment which has changed due to the ill effects of pollution created by industrial activities. The peppered moth Biston Betularia is a moth found  in Manchester, England. It exists in two forms, one a light patchy white and the other a sooty black. Under normal conditions, the majority of the white moths survive because the trees they rest on have white bark. The black moths have negligible numbers. Due to the Industrial Revolution in Manchester, the number of industrial establishments increased manifold, and the soot released from their chimneys started coating the tree trunks nearby, turning them black. The black variety now started getting camouflaged better on these blackened trunks, and their numbers rose and stabilized. The number of the white variety dwindled due to predation as they started getting easily spotted on the black trunks and get easily picked up by predators.

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