ozonelayer Holey protector What the Montreal Protocol was designed to protect Ultraviolet radiation blocker Stratospheric stratum that protects the Earth from the Sun Stratospheric shield Covering with a "hole" in it Atmospheric area with a "hole" Purportedly weakening shield Covering with a hole in it Atmospheric region with a "hole" It's found all around the world Chlorofluorocarbons damage it Environmentalist's concern