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
동물학적 연구는 생물 다양성을 이해하는 데 중요하다.dongmulhakjeok yeonguneun saengmul dayangseong-eul ihaehaneun de jungyohada.Zoological research is important for understanding biological diversity.