澳大利亚是地球上最古老的大陆,也是地球上最大的海岛及单一国家的大陆,它的面积约为770万平方公里,人口却不到2000万。地大物博,自然风光无限,同时又是目前地球上仍然保有原始状态的荒野少数地区之一。澳大利亚有很多古老的动植物。大约在两亿年前,澳大利亚就同其他大陆分离,孤立存在于南半球的海洋上,长期以来,由于自然条件比较单一,动物的演化很缓慢,至今还保存着许多古老的物种。那里没有高级的野生哺乳动物,只有低级的有袋类动物,如腹部有口袋以保存幼兽的大袋鼠、吃桉树叶生活的小袋熊,以及卵生的哺乳动物鸭嘴兽等,都是澳大利亚独有的珍 Australia is the oldest continent on Earth and the largest island on the planet and the continent of a single country. Its area is about 7.7 million square kilometers and its population is less than 20 million. It is one of the few wilderness areas that still maintain its original status on earth today. Australia has many ancient flora and fauna. About 200 million years ago, Australia separated from other continents and existed isolatedly in the sea of ​​the southern hemisphere. For a long time, as the natural conditions were relatively simple, the evolution of the animals was slow and many ancient species are still preserved. There are no high-level wild mammals, only low-grade marsupials such as wallabies with pockets in their pockets to keep cubs, pouch bears eating eucalyptus leaves and oviparous mammal platypuses, all of which are unique to Australia Jane