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.
❓ Что выявило исследование в Лондоне о воробьях?
A. A. Воробьи в центрах городов пели более длинные песни, чем в пригородах.
B. B. Воробьи в более тихих пригородах издавали более сложные песни.
C. C. Шумовое загрязнение не оказало влияния на модели пения воробьёв.
D. D. Воробьи в пригородах имели более короткие песни из-за шума дорожного движения.
✅ 正确答案
B. Sparrows in quieter suburbs produced more complex songs.