Biodiversity enhances the resilience and stability of ecosystems by providing a variety of species that fulfill different ecological roles, such as pollination, nutrient cycling, and pest control. This diversity allows ecosystems to better withstand environmental changes and disturbances, such as climate fluctuations and disease outbreaks. Additionally, a rich array of species can improve ecosystem productivity and resource availability, supporting food webs and overall ecological health. Ultimately, maintaining biodiversity is crucial for the long-term sustainability and functionality of ecosystems.