Today in our environmental science lecture, we're discussing the impact of urban development on local ecosystems. One key example is the construction of a new highway near the town of Greenfield. Before the highway was built in 2018, the area was home to over 200 species of birds. However, a recent survey conducted last year found that this number has dropped to just 150. Additionally, noise pollution has increased significantly, affecting the breeding patterns of native frogs. Interestingly, the local council has now proposed a wildlife corridor to connect fragmented habitats, which could help restore some of the lost biodiversity.
❓ According to the lecture, what was the main impact of the highway construction on the local bird population?
A. A) The number of bird species decreased from 200 to 150.
B. B) The birds migrated to a different area permanently.
C. C) The highway caused a complete extinction of native birds.
D. D) The bird population remained stable but changed its diet.
✅ 正确答案
A) The number of bird species decreased from 200 to 150.