Biodiversity refers to the variety of life at genetic, species, and ecosystem levels. It plays a key role in maintaining ecosystem stability, resilience, and productivity. Diverse ecosystems can better withstand environmental stress, recover from disturbances, and continue providing essential services like pollination, nutrient cycling, and climate regulation. Loss of biodiversity can disrupt food webs, reduce ecosystem efficiency, and increase vulnerability to diseases and climate change. Conserving biodiversity ensures that natural systems remain functional, supporting both human well-being and the survival of countless species across the planet.