Extinction of Australian Megafauna

Throughout sequence Australia has withstood the many climatic and geological changes that sustain stirred its flora and native fauna. Australia has been isolated from other continents for 45 jillion years. This isolation resulted in many unique plants and animals evolving. Over this date Australia has changed from a green, forested land to one of the most dry ve write downated landmasses on Earth. This change of climate is reflected in the fogy record. Fossil plants doom that at the time Australia separated from Antarctica, often of the land was cover with broad-leaved forests, even Central Australia. similar forests argon entrap today in wet equatorial orbits of northeastern Australia and Papua revolutionary Guinea. As Australia moved north at 6 to 7 centimetres per year, put up conditions changed and the climate desiccated out. The centre of Australia became drier and plants living thither either became nonextant or had to adapt to the drier conditions. The ve s hootation in this region changed from forests to woodlands to scrublands and eventually to grasslands. Eucalypts evolved in Eastern Gondwana at least 60 million years ago, before Australia became isolated. As the climate desiccate out Eucalypts became the dominant type of corner in Australia. Mammals break lived in Australia for many millions of years.

Australias most typical mammals are marsupials, which hold up their young in pouches, and monotremes (the platypus and echidna), which are the only mammals that ready eggs. Placental mammals, for example rats, bats and humans, migrated here much later. Marsupials today marsupials are found mainly in Austr! alia, Papua in the bare Guinea and South America and monotremes only live in Australia and Papua New Guinea. It is not known where marsupials originally evolved as their fogy record is quite poor. Some scientists think they originated in northwards America and reached Australia later via South America and Antarctica. Even... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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