Good morning, everyone. Today, in our environmental science lecture, we will discuss the impact of urban green spaces on city temperatures. Recent studies have shown that parks and gardens can reduce local temperatures by up to five degrees Celsius during heatwaves. This cooling effect is mainly due to the shade provided by trees and the process of evapotranspiration, where plants release water vapor. However, the effectiveness depends on the size and distribution of these green areas. For example, a large central park in a city can create a cool island, but small scattered gardens may have limited impact. Additionally, green roofs on buildings are becoming popular, but they are less effective in cooling streets at ground level. Therefore, planners should prioritize creating interconnected green networks rather than isolated pockets of greenery.
❓ Según la conferencia, ¿cuál es el factor principal que hace que los espacios verdes urbanos sean efectivos para reducir las temperaturas de la ciudad?
A. A. El número de árboles en el parque
B. B. El tamaño y la distribución de las áreas verdes
C. C. El tipo de plantas utilizadas en los jardines
D. D. La presencia de elementos acuáticos en los parques