Population density

Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans. It is a key geographic term

Main migration waves

Called migration to any movement of the population (human or animal) that occurs from a source to another destination and change of habitual residence in the case of people or animals habitat.

Model of population cycle

A population cycle in zoology is a phenomenon where populations rise and fall over a predictable period of time. There are some species where population numbers have reasonably predictable patterns of change although the full reasons for population cycles is one of the major unsolved ecological problems. There are a number of factors which influence population change such as availability of food, predators, diseases and climate.

World population distribution

The largest concentrations of population distribution are in Europe, Africa, India, Africa and China

Map of natural increase of world population

This image defines the population density in the world

Lugo population Pyramid (excel)

In this pyramid represents the percentage of women and men in Lugo depending on years that people have.

Synoptic chart of the Spanish political system