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
고지리학은 지구의 과거 환경을 연구하는 학문입니다.gojirihak-eun jigu-ui gwageo hwan-gyeong-eul yeongu-haneun hakmun-imnida.Paleogeography is the study of the Earth's past environments.