Unless you already have the accent (or a similar one), or have spent a lot of time with Australians, it is very difficult to describe just how to imitate one. The Australian accent has been scientifically proven to be the most difficult to imitate authentically. Suffice to say, you were either born in Australia and you know automatically, or you don't and nobody can help you otherwise.
There are numerous YouTube clips and other sites which purport to help you mimic the Australian accent, but the results are unrealistic and, to the average Australian, sound quite un-Australian.
If you are asking what Australians speak then it's English. If you are wondering what Australia blokes talk about then go into any pub and after a few pints they'll talk about anything!
Australians are not wombats. Wombats are marsupials. Australians are humans, which are placental mammals.
Australians are people who live in Australia
Aboriginal Australians are: many Australians are European or Asian or whatever in origin.
When they became Australians.
Watermelon, Australians just have an accent.
When they became Australians.
The Last of the Australians was created in 1975.
That is unclear, what has your daughter being a Canadian got to do with Australians
Australians were in country from about '62 to '72.
433 Australians were in the Olympic Team.
on average and by world standards Australians are wealthy