Pesticide use has grown a great deal in the past century, and similar to the plant-herbivore evolutionary "arms race":
A. increased use of pesticides is leading to
increased rates of resistance.
B. widespread chemical treatments pose little
concern because they wipe out all existing
herbivores.
C. pesticides are killing pests and their
predators, reducing the overall level of
herbivory in crop plants.
A
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