Australia is home to diverse ecosystems, including forests, deserts, grasslands, and coastal regions. The unique climate and geography support a wide variety of flora and fauna, many of which are endemic, meaning they are found nowhere else in the world. Key ecosystems include the Great Barrier Reef, Eucalyptus forests, and Australian deserts. These ecosystems play a crucial role in maintaining biodiversity and ecological balance. They provide habitats for numerous species, such as the kangaroo, koala, and various bird species. Conservation efforts are essential to protect these ecosystems from threats like climate change, habitat loss, and invasive species.