個こ体たい群ぐん生せい態たい学がくこたいぐんせいたいがくMeanings1nounpopulation ecologyAcademic term for the study of how populations of organisms interact with their environment and change over time.個こ体たい群ぐん生せい態たい学がくは、生せい物ぶつの個こ体たい数すう変へん動どうを