noun
[ U ] the process by which plants, animals, etc. that can adapt to their environment survive and reproduce, while the others disappear
noun
[ U ] the process by which plants, animals, etc. that can adapt to their environment survive and reproduce, while the others disappear
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005