Question

1 pts A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations best describes this observation?

Answer 1

Answer:

The plague probably presented resistance to the pesticide.  When a pesticide is applied and some members of the pests survive, they can present resistance and pass it to the next generation, thus making a specie resistant to that pesticide