A) Low rainfall
B) grazing animals
C) Planting trees
D) unfertility of soil
Correct Answer: C
Solution :[c] Afforestation is employed to check the spread of soil particle by wind erosion in areas having low rainfall. We plant trees in several rows to check wind velocity. For this purpose the trees mainly used are Acacia nilotica, Acacia catachu. Agave Americana etc.
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