The Australian flag features a blue background with the Union Jack in the top left corner and the Southern Cross constellation of stars to the right, representing the country's British history and southern geography. Australia uses plastic banknotes in different colors and copper, silver, and gold colored coins. Aboriginal tribes were the first inhabitants of Australia for over 70,000 years. Kangaroo skin was made into durable leather and used for early aviator jackets. Popular sports include soccer, cricket, rugby, and netball. Surfing is also a major hobby along coastal regions. Poisonous snakes and unique birds and mammals inhabit Australia alongside colorful wildflowers. The interior Outback desert is sparsely populated with little water amid surrounding oceans and mountain