India,has lost 75% of the 30,000 land races of rice it once had.What led to the loss of all of those land races of rice?
A) an epidemic of the disease bakanae
B) dependence on high-yielding crops
C) switching from rice as a staple to corn and potatoes
D) an invasion of Norwegian rats
E) the widespread use of herbicides
Correct Answer:
Verified
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