Today in our environmental science lecture, we're discussing urban green spaces. A recent study in Melbourne found that parks can reduce surrounding temperatures by up to 4 degrees Celsius during heatwaves. However, the cooling effect depends on the park's size and vegetation density. Smaller gardens with scattered trees have a minimal impact, while larger connected parks with dense canopy create a significant 'cool island' effect. The study also noted that water features, like ponds, enhance cooling but require careful maintenance to avoid mosquito breeding. Interestingly, the researchers suggested that even small rooftop gardens, if networked across a city, could collectively lower average temperatures by 1 to 2 degrees.
❓ Según la conferencia, ¿qué factor influye más fuertemente en el efecto de enfriamiento de un parque urbano?
A. A. La presencia de elementos acuáticos
B. B. El tamaño del parque y la densidad de la vegetación
C. C. El número de visitantes durante las olas de calor