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Ozone
The ozone layer protects the Earth's surface from harmful ultraviolet radiation; however, the presence of ozone near the surface is dangerous.
Kimia
Klasat 7 - 12
Autori: Vámos-Poljak Zsolt
Recensent: Horváthné Kunstár Andrea
Graphic designer: Molnár Mónika
Fjalë kyçe
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