The term "ecosystem" refers to a complex network of living organisms, their physical environment, and the interactions among them. An ecosystem includes various biotic components, such as plants, animals, and microorganisms, along with abiotic factors like soil, water, and climate. These elements work together, exchanging energy and nutrients, to maintain the balance of life within that environment. Ecosystems can be as small as a puddle or as large as a forest or ocean. Each has its own community of organisms that interact and depend on one another, contributing to the overall health and sustainability of the environment.