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Speciation is __
In which of the following case geographical separation give rise to speciation?
In which of the case speciation is possible?
Years ago black and gray moths were living on tree trunks in surroundings of Birmingham, England. Due to growth of algae and fungi on trees, the trees started appearing gray. Birds can eat black moths easily but gray moths are survived because of similar color of tree causing increase in their population. During industrial revolution, pollution increased and trees became black. Due to which black moths were remain hidden from their predators while gray moths can’t so population of black moths increased and gray moths decreased. This illustration signifies.
What factors could lead to the rise of a new species??