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
빙하학은 지구의 기후 변화에 대한 중요한 정보를 제공합니다.binghahak-eun jigu-ui gihu byeonhwa-e daehan jungyohan jeongboreul jegonghamnida.Glaciology provides important information about climate change on Earth.