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. A study in Chicago found that artificial lights at night disorient migratory birds, causing them to circle buildings for hours. This delays their journey and increases energy expenditure. Interestingly, the study also noted that birds are more attracted to red lights than blue ones, which suggests that changing street lighting could reduce these disruptions. So, while we often focus on temperature changes, light pollution is equally significant.
❓ Según la conferencia, ¿qué reveló el estudio en Chicago sobre las luces artificiales y las aves migratorias?
A. A. Las aves se sienten igualmente atraídas por todos los colores de la luz artificial.
B. B. Las luces rojas causan más desorientación en las aves que las luces azules.
C. C. Las luces azules retrasan la migración de las aves más que las luces rojas.
D. D. Las luces artificiales ayudan a las aves a orientarse durante su migración.
✅ 正确答案
B. Red lights cause more disorientation in birds than blue lights.