When Australia separated from Antarctica and started gradually moving north, what was the major factor leading to the onset of arid conditions?

Question

Quizplus · Accepted Answer

The onset of arid conditions in Australia as it moved northward was significantly influenced by the formation of the circum-Antarctic current. This current, established after Australia separated from Antarctica, led to a cooling of Antarctica and a reduction in moisture being transported to Australia, contributing to its aridity.

When Australia Separated from Antarctica and Started Gradually Moving North