Complex sentence: Most of the island is uninhabited, consisting of national park (covering 55.8 square kilometres) and forestry plantations, but the southern end of the island has been intensively urbanised as part of the Moreton Bay Region.
Split into simpler sentences: Most of the island is uninhabited, consisting of national park (covering 55.8 square kilometres) and forestry plantations. The southern end of the island has been intensively urbanised as part of the Moreton Bay Region.