最終更新日:2025/11/22
(evolutionary theory, geology) A sharp decrease in the total number of species in a relatively short period of time; specifically, a loss of ∼75% of all species on the planet over a geologically interval of less than 3 million years, as a result of a mass extinction event.
音声機能が動作しない場合はこちらをご確認ください
正解を見る
mass extinction
編集履歴(0)