1.   Australia has a low population density.

2.   Besides its political and racial distribution, population density varied greatly.

3.   For this reason, an increase in population density often precipitates a round of emigration.

4.   Frontier areas with low population densities attract particular kinds of exploitation of natural resources.

5.   He suggested that the main cause of social differentiation was the increase in population density.

6.   In some individual neighborhoods, the population density is three times greater than in the infamous slums of Calcutta or Jakarta.

7.   In such a model the weights themselves will have a direct interpretation as the average population density per Landsat pixel.

8.   Large retail chains are usually only prepared to locate stores in areas of high population density.

9.   Presumably there are factors that control the size, and they depend on the population density.