The structural and functional unit of the environment is known as

The structural and functional unit of the environment is known as an "ecosystem." An ecosystem is a complex, interconnected system composed of living organisms (biotic components) and their physical surroundings (abiotic components) interacting together within a specific geographic area. Ecosystems can vary in size and complexity, ranging from small microhabitats to vast biomes. They play a crucial role in maintaining ecological balance and supporting various life forms by cycling nutrients, energy, and matter through the interactions between organisms and their environment.