A) practical difficulty of introducing the predator to specific areas
B) method is less effective as compared with the use of insecticides
C) predator does not always survive when transferred to a new environment
D) predator develops a preference to other diets and may itself become a pest
Correct Answer: D
Solution :
Biological control refers to the use of living organisms like natural predators and parasites to reduce pest population and control diseases. However they may become pest as they can develop a preference to other diets.
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