ozone layer around the planet earth. uv protection

ozone layer planet earth uv protection uvb uva electromagnetic radiation atmosphere sun climate danger shield stratosphere ultraviolet pollution warming world diagram ecology environmental design decor ecosystem traditional surface frequency symbol absorbed partially heat hot destruction hole global eco weather air biology greenhouse temperature gas information educational problem rays awareness co2 change dangerous decrease effect labeled save scheme block background map sky concept education globe graphic science environment toxic process ray dioxygen generate photolysis produced protector uvc