Depends on the geographical characteristics of the region.
Explanation:
The most populated and least populated regions depends on the geographical characteristics of the region. Those regions having good geographical characteristics such as flat plain land, coastal regions etc having high population whereas least population is present in those regions where bad geographical characteristics such as hilly areas and desert regions etc are present so we can say that most populated and low populated regions depends on the geographical characteristics of the region.
The geosphere is the sphere over the earth in terms of all the lithos i.e., the water sphere, the ice sphere, and the atmosphere and all the boundaries of this sphere reaching up to the magnetosphere. Thus the geosphere can exchange the different mass and show the energy fluxes.
It may include all the interior of the earth's mineral and landforms and the processes that shape them.