Protected areas such as national parks, wildlife sanctuaries, and biosphere reserves play a crucial role in conserving biodiversity. They provide safe habitats for endangered and endemic species by limiting human interference like hunting, logging, and mining. These areas help maintain ecological processes, gene pools, and natural food chains. Protected areas also serve as sites for scientific research, environmental education, and eco-tourism, which raise awareness about conservation. By conserving entire ecosystems rather than individual species, protected areas ensure long-term sustainability and resilience against climate change and habitat degradation.