Today in our environmental science lecture, we're discussing the impact of urban development on local wildlife. One key point is that many cities have introduced green roofs, which are covered with vegetation. These roofs not only reduce heat absorption but also provide habitats for insects and birds. However, a recent study in London found that while green roofs attract more species than traditional flat roofs, they don't support the same diversity as natural ground-level habitats. The researchers suggest that to maximize biodiversity, we should connect green roofs with ground-level parks through 'green corridors'. Unfortunately, this is often overlooked in city planning due to cost and space constraints.
❓ What did the recent study in London reveal about green roofs?
A. They support more species than natural ground-level habitats.
B. They attract fewer species than traditional flat roofs.
C. They have higher biodiversity than ground-level parks but lower than natural habitats.
D. They are too expensive for most city planners to consider.
✅ 正确答案
They have higher biodiversity than ground-level parks but lower than natural habitats.