26e8dcd3_nd_Information_Services_Center__Example
[Term] Feedback [Usage] Output to one system acts as input to itself. The effect can be self-enhancing (positive feedback) or self-refulating (negative feedback). [Example] 
As river bar is eroded, it becomes more streamlined in shape, which reduces erosion (negative feedback).
Chapter 1 — GES DISC - Goddard Earth Sciences Data and Information Services Center
Example