System is an organization of functionally interactive units for the achievement of a common goal. All systems have inputs, outputs, and feedback, and maintain a basic level of equilibrium. For example, in the human body the heart functions to support the circulatory system, which is vital to the survival of the entire body.
The US Health Department has reminded residents that the “deer tick” (black-legged tick) which causes Lyme disease is already active. Even immature ticks as small … Read more