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Geography Optional 300+ Score Pack · Model answer

The process of desertification leads to soil desiccation and soil loss. Explain.

  • UPSC 2022
  • Contemporary Issues

Desiccation is a change of state — the profile loses its moisture store and the structure holding it. Loss is a change of place — mass is carried off site. Desiccation is reversible in a decade; loss of the A horizon is not, soil forming at about a tonne per hectare a year.

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What the full answer covers

  • The Two Outcomes Are Not the Same Event
  • Stage One: Desiccation — the Soil Dries and Its Architecture Collapses
  • Stage Two: Loss — the Dried Soil Is Removed
  • Judgement

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