noun
[ C , U ] the processes by which carbon is changed from one form to another within the environment, for example in plants and when wood or oil is burned
noun
[ C , U ] the processes by which carbon is changed from one form to another within the environment, for example in plants and when wood or oil is burned
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005