Ecosystem (noun)

1. A biological community of interacting organisms and their physical environment.
2. A complex network or interconnected system.

Origin:

Late 19th century: from eco- + -system.

Examples:

1. The ecosystem of the Amazon rainforest is one of the most diverse in the world.
2. The ecosystem of the coral reef is under threat from rising ocean temperatures.
3. The ecosystem of the city was characterized by the constant hustle and bustle of activity.
4. The ecosystem of the technology industry is constantly evolving.
5. The ecosystem of the lake was disrupted by the introduction of non-native species.