Which statement about biodiversity is true?

• A. Biodiversity reduces resilience.
• B. Biodiversity supports ecosystem resilience to environmental change.
• C. Biodiversity only affects aesthetics.
• D. Biodiversity has no impact on ecosystem functionality.

Answer: (B)

Biodiversity strengthens how ecosystems cope with change by providing a variety of species and functions that can respond differently to disturbances. When many species and genetic variations are present, the system has redundancy and complementary roles, so if some species are stressed or wiped out, others can take over the essential processes. This leads to greater resilience—the ability to absorb impacts and continue functioning, such as sustaining productivity, nutrient cycling, and pollination under changing conditions. That’s why biodiversity supports ecosystem resilience to environmental change.

The other statements don’t fit because biodiversity does more than affect aesthetics and has clear impacts on how ecosystems operate; it does not reduce resilience or have no effect on ecosystem functionality.