Population density is the number of the person per unit area, this is the population distribution:


 As you see the population is grouped into metropolitan and coastal areas.
The human factors are very inportant, they are agriculture, mineral wealth and industry.


Population change is the number of births minus the number of deaths plus or minus the number migrating.
In Spain population growth is positive due to migration.

This is a map showing the areas where most immigrants:

Which are the inmigrates places with more inmigrants?
And the least?

The diferent between  the crude birth rate and crude death rate is the rate of natural increase of population.