The ecosystem is an entire biotic network i.e. the living components, in a given place along with its abiotic or non-living components.
In other words, an ecosystem is a stable and settled unit of nature that includes a network of organisms that engage with each other and with the surroundings.
Final answer:
An ecosystem is an entire biotic network i.e. the living components, in a given place along with its abiotic or non-living components.