In today's lecture, we'll discuss the impact of urbanization on local wildlife. A recent study in Melbourne tracked the behavior of possums over five years. Surprisingly, the researchers found that possums in urban areas had a higher survival rate than those in rural forests, despite facing more threats from traffic and pets. The key factor was food availability: urban possums accessed a more consistent supply from gardens and waste bins. However, their diet was less diverse, leading to nutritional deficiencies in some individuals. The lecture emphasizes that while cities can support certain species, we must consider the long-term health consequences of these adaptations.
❓ ¿Cuál fue el hallazgo principal sobre las zarigüeyas urbanas en el estudio?
A. A. Tuvieron una tasa de supervivencia más baja que las zarigüeyas rurales.
B. B. Tenían una tasa de supervivencia más alta pero una dieta menos diversa.
C. C. Enfrentaban menos amenazas por el tráfico y las mascotas.
D. D. Tenían una dieta más diversa que las zarigüeyas rurales.
✅ 正确答案
B. They had a higher survival rate but a less diverse diet.