All settlements are in some way connected to the availability of resources or access to ways of making a living. It is important not to over-simplify explanations for the distribution of population. One cannot say this pace is too hot, too cold, too wet, or too dry because it seems that it is always possible to find a place to prove the counter point. However we do see broad patterns, for example, the Poles are devoid of human population although small groups do make their homes on the arctic fringe. Other places seem to be too dry but where humans practice irrigation it is possible to find large numbers of people.
Some places have large numbers of people but low per capita GNPs.
Others have small populations and are equally poor. Some populations live at high densities while others live in uncrowned conditions. Some of the world s largest concertinos of people are rural with residents who are farmers. Other population concentrations are urban and industrial. One can easily see that global generalizations about population have limited value.