POPULATION EVOLUTION & DISTRIBUTION

POPULATION EVOLUTION & DISTRIBUTION

1. POPULATION DISTRIBUTION

   • The average number of people per km2 is called population density.
     • Densely populated areas, are the ones in which technology is more advanced and has the most population.
       • Sparsely populated areas, are the ones that don't attract population.

2. SPAIN'S POPULATION

   • Until the 19th century, Spain's population grew slowly, from then on population increased.
     • The coastal areas are the most populated, not like the inland areas (except Madrid).

3. MIGRATION

   • Is the movement of people from one location to another.
     • There are three types depending on the: duration, destination and cause
       • Net migration is the difference between a country's number of emigrant and immigrants.
         • There are a lot of effects of migration, but the most common is the increase and decrease of the population. And sometimes it can lead to racism and xenophobia.

4. THE HISTORY OF MIGRATION

   • In the past, Spain was a country of emigrants.
   • Europe has been the principal continent in terms of migration.
   • The USA has been host to a lot of immigrants.

5. PRESENT-DAY MIGRATION

   • Migration has increased because of wars, persecution...
   • Nowadays there are irregulars migration routes: crossings between Africa and Europe, for example.

6. CONSEQUENCES OF UNEQUAL POPULATION DISTRIBUTION

   • High populates areas require a lot of water and wood. These are also the ones that pollute the most