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
토양의 집적은 식물 성장에 중요한 역할을 합니다.Toyang-ui jipjeogeun sigmul seongjang-e jungyohan yeoghal-eul hamnida.The accumulation of soil plays an important role in plant growth.