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

Map of countries of the European Union

Time line: Stages of joining the European Union

Synoptic chart of the territorial organization of State

World water cyrcle

The water from the soil surface evaporates.

Condensation occurs as it rises it is cooled and the water is transformed into steam. The droplets gather and form a cloud. Next, precipitation occurs, i.e., the droplets fall under its own weight. If the atmosphere is very cold, the water falls as snow or hail. If it's warmer, falling raindrops.

Some of the water that reaches the ground is used by living things; another reaches a river, lake or ocean. Another bit of the water is filtered through the ground, forming aquifers.

World climatological map

Warm climates are in the area of Ecuador.

         - Equatorial climate.

         - Tropical climate.

         - Desert climate.

Termperados climates are between the tropics and the poles.

          - Mediterranean climate.

          - Oceanic climate.

          - Atlantic climate.

          - Continental climate.

Cold climates occur at the poles and in high mountain areas.

           - Polar.

           - Mountain climate

Physical and political map of Europe

Physical map:

Political map: