Give a geographical reason for each of the following:

(i) The effects of wind erosion are more pronounced in desert areas.

(ii) Migratory sand dunes are uncertain and dangerous.

(iii) Long rooted trees and sand holding grasses are grown bordering fields near deserts.

(i) The effects of wind erosion are more pronounced in desert areas since there is little vegetation or moisture to bind the loose surface materials.

(ii) Migratory sand dunes are uncertain and dangerous because when they migrate with the wind, they damage towns and villages.

(iii) Long rooted trees and sand holding grasses are grown bordering fields near deserts to halt the advance of the dunes in order to prevent the fertile land from being devastated.