Feedback mechanisms are processes that help systems maintain balance and stability. They work by detecting changes and responding to them to keep things in check. For example, in the human body, homeostasis is maintained through feedback mechanisms that regulate temperature, blood sugar, and other vital functions. When something goes out of balance, these mechanisms kick in to correct it. There are two main types of feedback mechanisms: positive feedback and negative feedback. Negative feedback reduces the effect of a change, helping to restore balance, while positive feedback amplifies changes, pushing the system further away from its original state. Both types are essential for different functions in nature and technology.