Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
후빙기의 기후 변화는 생태계에 큰 영향을 미쳤다.Hubinggi-ui giho byeonhwa-neun saengtaegye-e keun yeonghyang-eul michyeotda.Postglacial climate changes had a significant impact on the ecosystem.