A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost al
l the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations best explains what happened?
1 answer:
Answer:
The pigweed found a weakness in the triazine and exploited it, or, the pigweed built up an immunity to the triazine.
Explanation:
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