Today, in our environmental science lecture, we're discussing urban green spaces. While parks and gardens are often praised for their aesthetic value, their ecological benefits are equally significant. For instance, trees in city parks can reduce local temperatures by up to 5 degrees Celsius through shade and evapotranspiration. Moreover, these green areas act as natural sponges, absorbing rainwater and reducing the risk of flooding. Interestingly, a recent study found that a single mature tree can absorb up to 150 kilograms of CO2 per year. However, the lecturer emphasizes that the placement of green spaces is crucial; poorly located parks may not provide equal access to all residents, leading to social inequality.
❓ ¿Qué dice el conferenciante sobre los beneficios ecológicos de los espacios verdes urbanos?
A. A. Principalmente mejoran el valor estético de las ciudades.
B. B. Pueden reducir las temperaturas y ayudar a prevenir inundaciones.
C. C. Son más efectivos cuando se ubican en los centros de las ciudades.
D. D. Absorben más CO2 que cualquier otra característica natural.
✅ 正确答案
B. They can lower temperatures and help prevent flooding.