Other crossword clues for answer "OZONEHOLE"OZONEHOLEHigh-level opening?Problem associated with propellantsBad opening for environmentalistsMontreal Protocol concernPolar environmental concernProblem linked to CFC'sAntarctic environmental concernOpening on an environmentalist's agenda?Atmospheric problemOpening for an E.P.A. worker?Seasonal thinning in the atmosphere over AntarcticaClimate issue addressed in the Montreal Protocol