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i) What is desertification?
ii) Differentiate between wind deflation and wind abrasion

Answer Text:
i) - Desertification is the process through which marginal lands are degraded through
climatic variations and human activities/ or encroachment of arid conditions into formerly productive areas
ii) - Wind deflation is the removal of loose
unconsolidated materials by a lifting and rolling action of wind
- Wind abrasion is the process whereby wind picks loose materials and uses it to scratch
and grind the earth’s surface