Which system is responsible for regulating metabolic activities of the body?

The system responsible for regulating metabolic activities of the body would be the Digestive system because it breaks down the food to store in the body to make body fat and to get rid of through waste.

Short The Digestive System

Behavioral science is the study of human behaviors and how they can be influenced.  by examining patterns in behavior as well as reactions, individuals with behavioral problems can be more adequately treated, resulting in greater mental health of our society/the public.