Ozone
The ozone layer protects the Earth's surface from harmful ultraviolet radiation; however, the presence of ozone near the surface is dangerous.
화학
7 ~ 12 학년
저자: Vámos-Poljak Zsolt
교정자: Horváthné Kunstár Andrea
그래픽 아티스트: Molnár Mónika
검색어
mozaLink
/웹 링크