Question: A nation started to extract sorghum from its arable fields in the 1 9 5 0 s . By the 1 9 7 0 s
A nation started to extract sorghum from its arable fields in the s By the s the land could not yield sorghum or any similar plant because all the soil nutrients had been depleted. Then in the to the region started to grow cotton. This is an example of what unsustainable model?
Low tax pyramid
Resource pyramid
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