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Which evolutionary mechanism caused the increase in dark-colored Biston betularia moths in England in the 1800s?
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Which evolutionary mechanism caused the increase in dark-colored Biston betularia moths in England in the 1800s?

User Yarl
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Industrial pollution making the tree bark on which the moths hide to become dark and the pressures of evolutionary natural selection.Changes in allele frequencies

User Superzadeh
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