In today's lecture, we'll discuss the impact of urbanization on local wildlife. One key point is that birds, such as sparrows, have adapted to city life by changing their song frequency to overcome background noise. However, this adaptation comes at a cost: their songs become shorter and less complex, which may reduce their ability to attract mates. Interestingly, a study in London found that sparrows in quieter suburbs sang longer and more varied songs compared to those in busy city centers. This suggests that noise pollution directly affects bird communication and reproduction.
❓ 런던에서의 연구는 참새에 대해 무엇을 밝혀냈는가?
A. A. 도심의 참새들이 교외의 참새들보다 더 긴 노래를 불렀다.
B. B. 조용한 교외 지역의 참새들이 더 복잡한 노래를 만들어 냈다.
C. C. 소음 공해는 참새의 노래 패턴에 영향을 미치지 않았다.
D. D. 교외의 참새들은 교통 소음 때문에 더 짧은 노래를 부른다.
✅ 正确答案
B. Sparrows in quieter suburbs produced more complex songs.