A. increased use of fertilizers
B. gradual change in climate
C. increased purchasing power of the citizens
D. introduction of large-scale irrigation
Correct Answer:
Option D – introduction of large-scale irrigation
A. increased use of fertilizers
B. gradual change in climate
C. increased purchasing power of the citizens
D. introduction of large-scale irrigation
Correct Answer:
Option D – introduction of large-scale irrigation
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