Compare the relief of the two continents (optional) and highlight the reasons for the similarities and differences

Similarities: the position of the continents on the most ancient platforms. The prevalence of plains, including plateaus. They were part of Gondwana.
Differences: in the north-west and north of Africa, the borders of the African platform coincide with the boundaries of lithospheric plates, and in the east of the platform the largest fault in the earth’s crust. In Africa, earthquakes and volcanic eruptions are often observed; in the northwest, the young folded mountains are Atlas. The boundaries of the ancient platforms in Australia are far from the boundaries of the lithosphere plate, there are no faults in the earth’s crust.