What natural features indicate a dry climate in Australia?

Australia is one of the most deserted continents.
There are 8 deserts in Australia, including the Great Victoria Desert with a total area of ​​647,000 square kilometers, and the Great Sandy Desert with an area of ​​400,000 km2.
In addition, there are practically no significant water bodies on its territory, the evaporation of water of which could saturate the surface of the continent with moisture.
In addition, the area and the number of drying up lakes are constantly increasing, which indicates an insufficient amount of precipitation on the mainland.