One of the major difficulties in the biological control of insect pest is that
A. the method is less effective as compared with the us of insecticides
B. the predator does not always survive when transferred to a new environment
C. the predator develops a preference to other diets may itself become a pest
D. the practical difficulty of introducing the predat specific area
Answer:B
One of the major difficulties in the biological control of insect pest is that
A. the method is less effective as compared with the us of insecticides B. the predator does not always survive when transferred to a new environment C. the predator develops a preference to other diets may itself become a pest D. the practical difficulty of introducing the predat specific area