IPA: //ˈiːkoʊˌsɪstəm//
KK: /ˈiːkoʊˌsɪstəm/
A system made up of living things, like plants and animals, and their environment, which work together as a unit.
The rainforest is a diverse ecosystem that supports many species of plants and animals.
Ecosystem → It is formed from "eco-" (from Greek "oikos", meaning house or environment) and "system" (from Greek "sustema", meaning a whole made up of parts). The word "ecosystem" refers to a community of living organisms interacting with their environment as a system.
Think of 'oikos' meaning house or environment, and 'system' meaning a whole made of parts — together, they help you remember that an ecosystem is a community of living things in their environment.