Answer:
Australia and Northern Asia
Explanation:
Australia is the largest island in the world, but it has very low population density because the vast majority of its territory is either arid or semi-arid.
Northern Asia includes Siberia, the Asian part of Russia, which has a population density of only 6.7 persons per square mile. While Siberia is not a desert, most of it is occupied by vast taiga forests with very few settlements scattered mainly in the southern half of the region.
