澳大利亚动物介绍AUSTRALIAANIMALS(英文)分析报告.ppt

Animals and Birds 鸭嘴兽Platypus * Climate of Australia  Australia is a large island continent in the southern hemisphere with a diverse range of climate zones. These vary from tropical regions in the north through the arid expanses of the interior to temperate regions in the south. Seasonal fluctuations can be great with temperatures ranging from above 50 ° Celsius to well below zero. Minimum temperatures are moderated by the lack of mountains and the influence of surrounding oceans. Australia is relatively arid, with 80% of the land having a rainfall less than 600 milimetres. per year and 50% having even less than 300 millimetres.Most Australians live near the wetter more moderate south eastern coasts primarily in major cities.  Because Australia is a relatively closed, its contact with the outside world is very few, less influence by the species of alien species in the long evolution process, thus evolved a relatively independent species system. And, the Australian species affected by external shocks is less, so that it can keep some of the more backward species, such as marsupial animal, the animal in other continents already because the survival of the fittest in natural selection rule to be eliminated. So, there are so many rare animal in Australia. Why?there are so many?rare?animals? Bilby 袋狸 　　The Bilby is a small nocturnal creature found mainly in Northern Territory. They have large ears like rabbits and eat small insects and various plants. Dingo 澳洲野狗 　　Dingos are found in various areas across Australia, it makes a howling sound that is very distinctive. Dingoes generally eat mice, rabbits and rats, although can also attack livestock when hungry. Echidna 针鼹 　　The Echidna is a small creature, which has a furry underside with sharp spines on its back. Echidnas live in the dry and hot desertland of Australia, as well as within the cooler climate of the Australian Alps. 　　Echidnas catch insects to eat. They grow to about 45cm. As