Population structure can be shown as a population pyramid, see diagram below:
Features of a population pyramid.
- Population is divided into 5 year age groups.
- Population is divided into males and females.
- The percentage of each age /sex group is given.
|MEDC/LEDC Occupational Structures|
|MEDC||Very low. Machines have largely replaced human labour on the farms.||Low. Automation is increasingly replacing human labour in factories. Globalisation is leading to a shift of manufacturing jobs to the NICs.||High. Large numbers are employed in education, health, administration and the knowledge economy|
|LEDC||Large primary sector (farming). Exports are usually primary commodities.||Low. Tariff barriers imposed by the trading blocs such as the EU prevent the export of cheap manufactured products. The domestic market is very small.||Large service sector. Many employed in the informal economy.|
|NIC||Shrinking primary (farming) sector.||Secondary sector is large and growing (transnationals).||Small but growing tertiary sector to serve the needs of the transnationals|