/ ˈiːkəʊsɪstəm; NAmE ˈiːkoʊ-/ noun
all the plants and living creatures in a particular area considered in relation to their physical environment
/ ˈiːkəʊsɪstəm; NAmE ˈiːkoʊ-/ noun
all the plants and living creatures in a particular area considered in relation to their physical environment
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005