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.
❓ ロンドンの研究は、スズメについて何を明らかにしましたか？
A. A. 都市部のスズメは郊外のスズメよりも長い歌を歌った。
B. B. 静かな郊外に生息するスズメは、より複雑な歌を発することが判明した。
C. C. 騒音公害はスズメのさえずりのパターンに影響を与えなかった。
D. D. 郊外のスズメは、交通騒音のせいでさえずりが短くなっていた。
✅ 正确答案
B. Sparrows in quieter suburbs produced more complex songs.