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.
Livor mortis. - roughly means death color. -as body begins to decompose, blood seeps down through tissues and settles in lower parts of the body. -hemoglobin turns purple when it spills out of the cells, this purplish color is visible on parts of the skin wherever blood pools.