The main role of biodiversity in maintaining ecological balance is to provide resilience and stability to ecosystems. A diverse range of species contributes to ecosystem services such as pollination, nutrient cycling, and climate regulation. High biodiversity enhances ecosystem productivity, allowing for greater adaptability to environmental changes and disturbances. Additionally, biodiversity supports food webs, ensuring that energy flows through the system effectively. Protecting biodiversity is crucial for sustaining ecosystem health and function, emphasizing the interconnectedness of species and their environments in the face of global challenges.