Yes, it can.
Because of Australia's range of climates and soil types, the country is able to grow nearly any crop. Greengrocers in Australia offer a fantastic array of fruit and vegetables, most of which are locally grown. Sugar cane is a significant industry in the eastern and north-eastern regions.
Australia grows a lot of cereal crops - wheat, barley, oats for example and also leguminous crops - beans, lentils, chickpeas. Corn and rice are also grown.
Livestock is important: beef cattle is a thriving industry, as are sheep for meat ("fat lambs"), pigs, poultry and dairy cattle.
The wool industry in Australia remains strong, and cotton is also grown.
The manufacturing industry is solid in many areas. Almost every conceivable mineral or metal is mined, and this supports the manufacturing industry. In addition, Australia has substantial reserves of coal, natural gas and oil.
How did a Castle sustain itself in Peacetime
Diamonds are not sustainable, in the environmental sense.
Australia is located in the continent of Australia.
No, Australia is a continent by itself.
The US was large enough and industrialized enough, to sustain a normal society, and fight a war at the same time.
The Philippines is not a small group of isolated islands. The Philippines has the geography and the amount of land needed to sustain a standard of living for it's citizens.
There are no countries in Antarctica, and Australia is a country itself.
The music industry relies on copyright protection to sustain itself.
Given that Australia is the only country in Australia, only Australia can export wool from itself.
The continent of Australia is completely surrounded by water.
Kyogre because it lives underwater and it needs to sustain itself by eating bacteria.
Well yes, but the only country is Australia itself; Australia is not only a continent, but is a country as well