An open system is a type of system that interacts with its environment by exchanging energy, matter, or information. This means that open systems can receive inputs from outside and produce outputs, allowing them to adapt and evolve over time. Examples of open systems include ecosystems, organizations, and even the human body, which all rely on external resources to function effectively. In contrast to closed systems, which do not exchange matter with their surroundings, open systems are dynamic and often complex. They are influenced by external factors, such as climate, market trends, or social interactions, making them essential for understanding processes in various fields, including biology, economics, and engineering.