Population Numbers, Densities and Changes (AQA A-Level Geography): Flashcards
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Global population in 1800
Global population in 1800
1 billion people
Projected global population by 2050
Projected global population by 2050
9.7 billion
Asia's share of world population
Asia's share of world population
60%
Sub-Saharan Africa population change by 2050
Sub-Saharan Africa population change by 2050
Projected to double
Europe & N. America growth rate to 2050
Europe & N. America growth rate to 2050
2%
Neolithic Agrarian Revolution outcome
Neolithic Agrarian Revolution outcome
Shift from hunting/gathering to settled agriculture
Food security definition
Food security definition
Access to sufficient, safe, nutritious food at all times
Agricultural productivity meaning
Agricultural productivity meaning
More food produced per unit of land, labour or resources
Salinisation
Salinisation
Build-up of salts in soil to toxic levels for plants
Topography
Topography
Relief and drainage patterns of an area