Native species are plants and animals that naturally occur in a specific region or ecosystem without human introduction. They have adapted to the local environment over time, developing unique characteristics that help them survive and thrive in their habitats. Examples of native species include the Eastern Bluebird in North America and the Koala in Australia. These species play essential roles in their ecosystems, contributing to biodiversity and maintaining ecological balance. They often interact with other native species, forming complex relationships that support food webs and nutrient cycles. Protecting native species is crucial for preserving the health of ecosystems and the services they provide.