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Australia is the smallest of the continents ¾ size of Africa 1/6 size of Asia or Americas
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It is the largest Island in the World Coastline 12,210miles
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Geologically dates back 2,000 years
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Once part of the Antarctic Continent – reached its present state through the process of gradual drift
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Skeletal remains and fossils indicate that Australia was inhabited by Giant land fauna (Megafauna)
Eg wombat like creature as large as a Rhino
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Arrival of the first humans – sparked massive wave of extinctions and we are still in the middle of another wave with the arrival of the europeans
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Before humans, diversity would have changed, but much slower
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Every time a species went extinct, by and large something was evolving to fill that niche
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Therefore – ecosystems would change throughout time
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