Final answer:
The blank refers to the vast outback in western and central Australia. This region, consisting of deserts and semi-arid plateaus, supports unique ecosystems and traditional lifestyles despite its extreme climate and sparse population.
Step-by-step explanation:
The blank, which refers to the central and western regions of Australia, covers a considerable expanse of the continent. This vast area includes the Australian outback, characterized by desert landscapes, sparse population, and significant variations in temperature between day and night due to its Type B climates. The interior, mostly consisting of desert plains and semi-arid plateaus, houses unique ecosystems and supports both traditional Aboriginal lifestyles and mining and agricultural activities. Key features of this region include the Great Artesian Basin, a critical water source amid the dry lands, and large deserts like the Gibson Desert, Great Victoria Desert, and Great Sandy Desert. Moreover, the flora and fauna of the interior are adapted to the harsh conditions, with species like Spinifex thriving in some areas.