Africa's population has just passed 1 billion.
The continent's population is growing by about 24
million per year, and will double by 2050.
About half the world lives in poverty.
Nearly 50 percent of world population lives on
less than the equivalent of US$2 per day.
Hundreds of millions of people live
barely above that level.
Population density is a measurement of the
number of people in an area.
It is an average number.
Population density is calculated by dividing the
number of people by area.
Population density is usually shown as the number of people per square kilometre.
This map is a choropleth (shading) map and illustrates population density.
The darker the colour the greater the population density.
The map shows that world population distribution is uneven. Some areas
have a high population density while others have a low population
Areas of high population density tend to be located between 20° and
60°N. This area contains a large land area and a relatively temperate
"Population density" is the term that describes the number of individuals
occupying an area in relation to the size of that area.
The population density is derived by dividing the number of people by the area they occupy.
Noah's Ark gets a bit overcrowded.