Câu 25: GED Section 3 Science: Section Three Science

In the early 19th century, almost all peppered moths collected by biologists in the U.K. were pale and mottled. Only rarely was a collector able to find a dark- peppered moth. After the Industrial Revolution, when furnaces filled the air with dark soot, the light-peppered moth became rare and the dark peppered moth was most common in industrial cities. A reasonable explanation for this change is that the dark moth was less likely to be seen and eaten by birds against the dark background. This explanation illustrates the principle of

1. A. conservation of energy.
2. B. natural selection. — đáp án hiện tại
3. C. gene flow.
4. D. male competition.
5. E. acquired traits.