The concept of biodiversity encompasses not only the variety of species within an ecosystem but also the genetic diversity within each species and the diversity of ecosystems themselves. Recent studies indicate that high biodiversity enhances ecosystem resilience, allowing habitats to recover more quickly from disturbances such as fires or floods. Conversely, simplified ecosystems, often resulting from monoculture farming or urban development, tend to be more vulnerable to invasive species and diseases. Furthermore, biodiversity plays a critical role in supporting essential services like pollination, nutrient cycling, and water purification. However, the loss of biodiversity is accelerating due to human activities, including habitat destruction and climate change. Conservation efforts, therefore, must focus on protecting entire ecosystems rather than individual species in isolation, as interconnected species rely on one another for survival and stability.
❓ Según el pasaje, ¿cuál es una razón clave por la que la alta biodiversidad es beneficiosa para los ecosistemas?
A. A. Aumenta el número de especies invasoras en el ecosistema.
B. B. Ayuda a que los ecosistemas se recuperen más rápidamente de las perturbaciones.
C. C. Simplifica la cadena alimentaria dentro del ecosistema.
D. D. Reduce la necesidad de polinización y purificación del agua.
✅ 正确答案
B. It helps ecosystems recover more quickly from disturbances.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first