Why is the study of population, …

Firstly When we say about population...which is not constant and always gets affected by the following factors like..... High death rate. High birth rate. Natural calamities. these factorsHealth facilities. Hygiene. Availability of basic resources(water). If any of these factors affects then there would be a major or a minor change in population density.... Secondly studying of population density in remote area is a challenging task.... Whereas density of a place varies because of following reasons:) Availability of water... Availability of resource.. Good health and education facility.. Employment opportunities... Availability of resources... Access to market.... Urban facilities.. Etc...