题目内容
A 2010 study showed that about ______ of wild or weedy canola tested contained genetically modified herbicide resistance genes.
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Research concluded that adoption of GM technology had reduced chemical pesticide use by ______, with the effect larger for insect-tolerant crops than herbicide-tolerant crops.
Potential environmental effects of genetically modified crops include gene flow, pesticide resistance and ___________________________.
Genetically modified crops interact directly with organisms that feed on the crops and indirectly with other organisms in the ______________.
A genetically modified organism (GMO) is any organism whose genetic material has been altered using _______________________________.
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