Which term means the variety of life in a particular habitat or ecosystem, crucial for resilience and sustainability?

Which term means the variety of life in a particular habitat or ecosystem, crucial for resilience and sustainability?

• A. Biodiversity
• B. Reservoir
• C. Aquifer
• D. Terracing

Answer: (A)

Understanding biodiversity—the variety of life in a particular habitat or ecosystem—is essential for seeing why ecosystems stay productive and can bounce back after disturbances. When many species and genetic variations exist, different organisms take on complementary roles: some pollinate crops, others break down waste, others control pests, and still others stabilize soil and climate. This diversity creates redundancy and a wealth of functions, so if one species declines or a new stress appears, others can fill the gap, helping the system adapt, recover, and continue providing resources. That resilience underpins sustainable use of the land and its services. The other terms don’t capture that idea. A reservoir refers to stored water, not the variety of living beings. An aquifer is an underground water source, also about water storage rather than life diversity. Terracing is a farming technique to reduce erosion on slopes, which is a beneficial practice but not about the variety and resilience provided by life in a habitat.

Understanding biodiversity—the variety of life in a particular habitat or ecosystem—is essential for seeing why ecosystems stay productive and can bounce back after disturbances. When many species and genetic variations exist, different organisms take on complementary roles: some pollinate crops, others break down waste, others control pests, and still others stabilize soil and climate. This diversity creates redundancy and a wealth of functions, so if one species declines or a new stress appears, others can fill the gap, helping the system adapt, recover, and continue providing resources. That resilience underpins sustainable use of the land and its services.

The other terms don’t capture that idea. A reservoir refers to stored water, not the variety of living beings. An aquifer is an underground water source, also about water storage rather than life diversity. Terracing is a farming technique to reduce erosion on slopes, which is a beneficial practice but not about the variety and resilience provided by life in a habitat.