Human Causes of Desertification

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Soil Erosion
- Soil becomes worn out
  - Can't afford fertiliser
    - Poverty
- Desertification
Agriculture
- More Strain on the soil
  - Soil Erosion
    - Soil becomes worn out
      - Can't afford fertiliser
        Poverty
    - Desertification
Population Increase
- More food needed overcultivation overgrazing
  - Soil becomes worn out
- More fuel needed
  - Deforestation
    - Soil left bare