Dynamic models are mathematical representations that simulate how systems change over time. They are used in various fields, such as economics, biology, and engineering, to predict future behavior based on current conditions and past data. These models often incorporate variables that can change, allowing for a more accurate depiction of real-world processes. In dynamic models, feedback loops and interactions between components are crucial. For example, in ecological models, the population of one species may affect another, illustrating how interconnected systems can influence each other. By analyzing these relationships, researchers can better understand complex systems and make informed decisions.