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1. What hydrological change commonly results when rapid urban expansion replaces natural and semi-natural land with built-up surfaces?
2. When vegetation, wetlands, streams, and ponds are replaced by buildings and roads, which ecological change is most likely?
3. Which description best defines green infrastructure?
What happens to natural land during rapid urban expansion?
It transforms into built-up surfaces.
How does urban expansion affect vegetation and water infiltration?
It reduces vegetation and infiltration.
What increases due to rapid urban expansion?
Runoff, flooding, and water stress increase.
What is blue-green infrastructure?
It combines blue water systems, green ecological systems, and built infrastructure.
What does blue-green infrastructure treat as important urban components?
Natural and semi-natural systems.
What is green infrastructure according to the European Commission 2019?
A strategically planned network of natural and semi-natural areas delivering ecosystem services and social benefits.
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