Advanced Placement (AP), 30.11.2020 07:40 tangia

Researchers examined the effect of industrialization and increased pollution (soot) in London on the coloration in a single species of moths. Birds prey on the moths that are easily visible on trees. The researchers observed moths on tree trunks and recorded their body color. The percentage of moths with light-colored bodies and the percentage of moths with dark bodies is shown on the graph above. Based on the data in the graph, which of the following best describes the change in the population of moths as a result of industrialization?
A. The percentage of dark-colored moths increased in the population and the percentage of light-colored moths decreased in the population.
B. The percentage of dark-colored moths decreased in the population and the percentage of light-colored moths increased in the population.
C. The percentage of dark-colored moths decreased in the population after 1850 and the percentage of light-colored moths remained constant throughout the time period.
D. The percentage of both the dark-colored moths and the light-colored moths remained constant throughout the time period.

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