Answer:
Australia is the smallest continent, and because it is surrounded by water, it is referred to as an island continent. Geologically speaking, it is not an island.
Australia is comprised largely of desert and semi-arid land, some of which is sandy, and some of which is stony desert, known as gibber. There are numerous flat areas of bushland and mallee and mulga scrub, and extensive rainforest in the far north and in sections along the eastern coast, including Tasmania.
A significant mountain range, the Great Dividing Range, extends right along the eastern coast from the far north to the south, in western Victoria. The world's two highest monoliths (or rather, inselbergs) are located in Australia. They are Mt Augustus and Uluru (Ayers Rock).
Much of the land along the east coast and in the southeast quarter of the continent is rich and fertile. Australia is known for its clean, prinstine beaches and the Great Barrier Reef off the coast of Queensland.
Tasmania (Australia's island state) is a rugged, wild island.