population density

The density of population estimates the number of in habitants between the surface of the site.In general it is cosidered that an area is sparsely populated has a density of 10 inha/ km2. And that is a very populated area if the density exceeds 80 inha/km2.

model of population density

The model of demographic transition progesses in four stages:
Old or preindustrial demographic regime :it is characterized by high mortality rates and birth rates.
First transition: keep the hight birth rate, but mortality drops.
Second transition: the birth rate begins to decline, but mortality is still down more slowly.
Modern demographic regime: mortality rates and very low birth.

world population distribution

The world population is the total number of living humans beings on planet Earth

map of natural increase of world population

International migration has been a central element in enriching many cultures and civilisations throughout human history, supporting the process of global economic growth and contributing to the evolution of states and societies.

spanish population pyramid

The pyramid of the population in Spain indicates the percentage of people who are that age