In today's lecture, we'll discuss the impact of urbanization on local ecosystems. One key point is that cities often create 'heat islands' due to concrete and asphalt absorbing sunlight. However, a lesser-known effect is on bird migration patterns. Recent studies show that artificial lights at night confuse young birds, causing them to deviate from their routes. Interestingly, older birds seem less affected, possibly because they rely more on magnetic fields. Another finding is that planting native trees in parks can partially mitigate these disruptions, as they provide natural landmarks. So, while urban growth poses challenges, targeted green spaces offer a practical solution.
❓ According to the lecture, what is a lesser-known effect of urbanization on birds?
A. A. It increases their reliance on magnetic fields
B. B. Artificial lights disrupt young birds' migration routes
C. C. Older birds completely lose their sense of direction
D. D. Native trees attract too many predators
✅ 正确答案
B. Artificial lights disrupt young birds' migration routes