A. controlling erosion
B. increasing soil fertility
C. preventing desert encroachment
D. reducing effects of environmental pollution
E. increasing output of mineral oil
Correct Answer:
Option E – increasing output of mineral oil
A. controlling erosion
B. increasing soil fertility
C. preventing desert encroachment
D. reducing effects of environmental pollution
E. increasing output of mineral oil
Correct Answer:
Option E – increasing output of mineral oil
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