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Australia is noted for its unique biodiversity. Many animals are found only in Australia, the most well known examples are the group of marsupials (Kangaroos, and Koalas)and the Platypus. Examples of plants that only grow in Australia are the banksia, yellow wattle and gum tree.   

Australia is noted for its unique biodiversity. Many animals are found only in Australia, the most well known examples are the group of marsupials (Kangaroos, and Koalas)and the Platypus. Examples of plants that only grow in Australia are the banksia, yellow wattle and gum tree.   

Studies (2) indicate that Australia's unique wildlife is the result of Australia been and island and cut off from the Asian landbridge between 40 000 -250 000 years ago, though there is a difference of opinion as to when Australia became an island.   

Studies (2) indicate that Australia's unique wildlife is the result of Australia becoming an island, cutting itself off from the Asian landbridge between 40 000 -250 000 years ago (though there is a difference of opinion as to when Australia became an island).