Which of the following is a disadvantage of using Bt to control insects?
A) Bt does not accumulate in the soil or in nontarget animals.
B) Bt is easily degraded in the natural environment.
C) The toxin can only be activated in target insects so it is nontoxic to mammals.
D) Though not well documented it is possible for horizontal gene flow to introduce Bt genes into other plants.
Correct Answer:
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