Biology

The correct answer is: C.Ecosystem diversity usually increases ecosystem stability.

Explanation:

Ecosystem diversity refers to the variety of different ecosystems in a region, such as forests, wetlands, or grasslands. These ecosystems support a wide range of species and ecological functions. Higher ecosystem diversity often leads to greater stability because diverse ecosystems are more resilient to disturbances like climate change, natural disasters, or human activity. For example, diverse ecosystems can maintain essential functions, such as nutrient cycling and water purification, even under stress.