841AgricultureMedium
In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of________?
ABoth a & b
BTreatment of shifting sand-dunes by fixing barriers in parallel stripes or in a chess-board design, using the local shrub material starting from the crest of the dunes to protect the seedlings from burial or exposure by the blowing of sand.
CNone of these
DProtection against biotic interference
Correct answer
A. Both a & b
Explanation
The correct answer is Both a & b.