THE WORLD POPULATION GROWTH

In the previous unit you have learnt about relief, climate and natural landscape. You have also learnt how important nature is for people's survival.

In this unit you will learn about the world population and its evolution through History.

The following video shows how population has grown since the year 1C.E.  and what its evolution would be until the year 2050.

And if you click on the first image you  will see The USA and World Population Clock, which shows how the world's population is growing just now.

KEY WORDS AND TERMS
You must know the meaning of the following terms:

• birth rate
• death rate
• natural increase
• infant mortality rate
• life expectancy
• birth control
• dependent population
• dependency ratio
• family planning
• population piramids/age-gender structures
• replacement rate
• fertility rate
• ageing population.
• population distribution and population density
• a more economically developed country (MEDC)  and less economically developed country (LEDC)
• overpopulation and under population.