FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a change in an environment can result in the evolution of species living there
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evolution occurs so slowly that it is not possible to determine that it has happened in less than a million years
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the environment near has always favored dark colored moths
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the environment has always favored light colored moths
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Detailed explanation-1: -Industrialisation and domestic coal fires had caused sooty air pollution, which had killed off lichens and blackened urban tree trunks and walls. So, it was now the pale form of the moth that was more obvious to predators, while the melanic form was better camouflaged and more likely to survive and produce offspring.
Detailed explanation-2: -The light moths blended in with the light-colored trees. However, the Industrial Revolution changed the tree colors. After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form.
Detailed explanation-3: -Wing-color changes in peppered moths are a common example of what scientists refer to as natural selection. In it, organisms develop random mutations. Some of the gene changes will leave individuals better suited-or adapted-to their environment. These individuals will tend to survive more often.