How is Australia able to grow food?

Answer 1

The same way as anywhere else through open farming grazing and hydroponics.

Because of Australia's range of climates, the country is able to grow nearly any crop as long as the water to do it can be obtained, and the soil is suitable. Greengrocers in Australia offer a fantastic array of fruit and vegetables, most of which are locally grown. There is a huge variety of fruits and vegetables - apples, Oranges, melons, citrus, tropical, Pears, potatoes, onions, salad vegetables, carrots, lettuce, cabbage, broccoli, tomatoes - anything you can imagine. Australia has a very strong stonefruit industry (cherries, peaches, apricots, nectarines, etc) while the tropical areas supply pineapples, mangoes, and bananas. Due to the excellent climate, sugar cane is a significant industry in the eastern and north-eastern regions.

Australia grows a lot of cereal crops - wheat, corn, barley, oats for example and also leguminous crops - beans, lentils, chickpeas. Even rice is farmed as river waters are diverted.

Livestock are also "grown" and bred in Australia. Beef cattle is a thriving food industry, as are sheep for meat ("fat lambs"), pigs and poultry. Given that milk is a food, one should also include dairy cattle in the list.