Population density shows how cramped or spread out inhabitants are. Cities with high population densities can be considered overpopulated, but the extent to which this is the case depends on factors like quality of housing and infrastructure and access to resources. Source: Wikipedia, 2017.
Livor mortis on the posterior aspects of the body is caused by settling of the blood because of gravity when the body is in a supine position. As the postmortem interval lengthens, Tardieu spots develop in areas of lividity, such as this individual's shoulder area, as decomposing capillaries rupture.
Rigor Mortis usually starts taking place right after someone dies and lasts for about 72 hours depending on the temperature in the room that the death occurred in. The process of Rigor Mortis takes place mostly because the muscles cannot relax after someone dies. The bones in the personâs body start to actually contract within themselves and the skeletal muscles start to do the same.