Emma Smith ~ Biology
What is the Peppered Moth?
The Peppered moth and The industrial Revolution
During England's industrial revolution the extreme amounts of pollution being emitted caused the countryside between London and Manchester to become blackened with soot emitted from the coal burning factories.
The birch trees which the Peppered moths commonly camouflaged into became dark with soot this caused Many of the light-bodied moths to die from the sulphur dioxide emissions as well as the increased ability for predators to see the lighter moths on their now darkened backgrounds. The dark coloured peppered moths were now better suited to their environments and weren't as easily preyed upon by their main predator, birds. The decreased strain placed on the small population of black peppered moths enabled it to grow due to its better adaptions to fit within its own niche. The effect the industrial revolution had on the peppered moth population and their body colours led to the introduction of the term "industrial melanisim".
Industrial melanism, darkness—of the skin, feathers, or fur—acquired by a population of animals living in an industrial region where the environment is soot-darkened.
Charles Darwins Natural Selection
Natural Selection is the process in which forms of life have traits that enable them to adapt to specific environmental pressures. These environmental pressures change and vary from predators, changes in climate, competition for food and/or mates. The ability for species to withstand these changes allows them to survive and reproduce in greater numbers than the others of their kind that possess less favourable traits. This ensures that these favourable traits will be in succeeding generations.