Answer:
The statement "Australia has a low physiological population density because Australia is not bordered by other countries" is not accurate. Physiological population density is a measure of population per unit of arable land. It is calculated by dividing the population of a region by the arable land area. The factors mentioned in the statement do not directly relate to physiological population density.
The correct explanation for Australia's low physiological population density is related to its geographical characteristics. Australia has a vast land area, but a significant portion of it is arid or semi-arid, consisting of deserts and other uninhabitable regions. The majority of the population is concentrated along the more fertile eastern and southeastern coastal areas, leaving much of the inland and western regions sparsely populated.
So, the accurate reasons for Australia's low physiological population density are its large expanses of uninhabitable land, particularly deserts in the west, rather than the fact that it is not bordered by other countries.