In a Study in China, Several Different Varieties of Rice

In a study in China, several different varieties of rice were planted in the same field.Crop yields increased by 89 percent compared with fields with a single variety of rice.This occurred because there was a dramatic decrease in disease and the fields remained stable without using pesticides.In addition, the system increased local biodiversity.This is an example of a(n) _______ showing greater productivity and stability than a(n) _______.

A) monoculture; polyculture
B) polyculture; monoculture
C) natural community; agricultural community
D) agricultural community; natural community
E) polyculture; natural community

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