D) (d) Feedback mechanism
Correct Answer: A
Solution :[a] Cybernetic system is a basic function of every ecosys' It is the tendency of every ecosystem to regulate and maintain itself and resist any stress or disturbances upto a certain ' Adaptability is related to species not to ecology. Homeostasis is the property of an ecosystem to tolerate external disturbance or stress. Feedback mechanism helps functioning of the ecosystem by countering the disturbance Feedback mechanism may be positive or negative.
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