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Introductory course, in college, 3 letters
Small daring display?, 11 letters
City in Crockett County TX, 5 letters
___ hole (modern worry), 5 letters
___ layer (upper atmosphere part), 5 letters
___ holes, better put up my umbrella! (B-52's lyric), 5 letters
A high flier may fly in it, 5 letters
A layer with a hole, 5 letters
Absorber of ultraviolet radiation, 5 letters
Absorber of ultraviolet rays, 5 letters
Allotrope of element #8, 5 letters
Allotrope of oxygen, 5 letters
Allotropic form of element No. 8, 5 letters
Allotropic form of oxygen, 5 letters
Allotropic greenhouse gas, 5 letters
Atmosphere component, 5 letters
Atmospheric concern, 5 letters
Atmospheric layer of note, 5 letters
Atmospheric layer with a hole in it, 5 letters
Certain atmospheric gas, 5 letters
Certain atmospheric layer, 5 letters
Chlorofluorocarbons deplete it, 5 letters
Commander Cody album Tales from the ___, 5 letters
Composition of an endangered layer, 5 letters
Contents of a sensitive layer, 5 letters
Controversial stratum, 5 letters
Corrosive substance, 5 letters
Deep blue magnetic liquid, 5 letters
Dwindling gas in the stratosphere, 5 letters
Ecologist's concern, 5 letters
Electrical storm byproduct, 5 letters
Endangered atmospheric layer, 5 letters
Environmentalist's concern, 5 letters
Famed form of oxygen, 5 letters
Form of oxygen in the news, 5 letters
Form of oxygen with a sharp odor, 5 letters
Fragile atmosphere layer, 5 letters
Fresh air, informally, 5 letters
Fresh air, slangily, 5 letters
Gas that both protects and pollutes, 5 letters
Gas used to reduce bacteria on fruits and vegetables, 5 letters
Gas with a penetrating odor, 5 letters
Global warming factor, 5 letters
Global-warming buzzword, 5 letters
Important type of layer, 5 letters
It protects everybody, 5 letters
Its gap should be minded, 5 letters
Kind of hole or layer, 5 letters
Kind of layer protecting the earth, 5 letters
Layer discussed in An Inconvenient Truth, 5 letters
Layer in environmental news, 5 letters
Layer in the atmosphere, 5 letters
Layer of concern to ecologists, 5 letters
Layer on top of us all, 5 letters
Layer that absorbs ultraviolet rays, 5 letters
Layer that filters out UV rays, 5 letters
Layer that screens ultraviolet rays, 5 letters
Layer to be concerned about, 5 letters
Layer with a hole in it, 5 letters
Layer with a problematic hole, 5 letters
Lightning by-product, 5 letters
Lightning strike by-product, 5 letters
Low-level pollution or high-level protection, 5 letters
Molecule also called trioxygen, 5 letters
Molecule formed by lightning, 5 letters
Much discussed layer, 5 letters
Noted form of oxygen, 5 letters
Noted pale-blue gas, 5 letters
O___3, chemically speaking, 5 letters
Oft-discussed layer, 5 letters
Oxygen with a weak chlorine odor, 5 letters
Oxygen with an odor, 5 letters
Pale blue, poisonous gas, 5 letters
Part of the stratosphere, 5 letters
Photochemical smog component, 5 letters
Protection around the world?, 5 letters
Protective shield makeup, 5 letters
Protective stratosphere, 5 letters
Radiation-reducing layer, 5 letters
Site of a worrisome hole, 5 letters
Space cadet's place?, 5 letters
Stratosphere substance, 5 letters
Subject of environmentalist study, 5 letters
Swimming-pool sanitizer, 5 letters
Tailpipe emissions threaten ___ layer, 5 letters
There's a hole in it, 5 letters
Thinning atmospheric layer, 5 letters
Threatened atmosphere layer, 5 letters
Thunderstorm by-product, 5 letters
Thunderstorm residue, 5 letters
Triatomic form of element #8, 5 letters
Triatomic form of oxygen, 5 letters
Triatomic greenhouse gas, 5 letters
Triatomic pollutant, 5 letters
Type of layer or hole, 5 letters
Ultraviolet blocker, 5 letters
Ultraviolet Index factor, 5 letters
Ultraviolet light filter, 5 letters
Ultraviolet radiation absorber, 5 letters
Ultraviolet ray absorber, 5 letters
Ultraviolet ray blocker, 5 letters
Ultraviolet-ray screen, 5 letters
Upper atmosphere gas, 5 letters
Upper atmosphere layer, 5 letters
Vehicle emissions affect ___ layer, 5 letters
Vehicle emissions threaten ___ layer, 5 letters
Wizard's land joined part of the upper atmosphere (5), 5 letters
Word with hole or layer, 5 letters
Word with layer and hole, 5 letters
A colorless gas (O3) soluble in alkalis and cold water, 5 letters
A strong oxidizing agent, 5 letters
Upper-atmosphere tango, 10 letters
Banning CFC production, e.g.?, 12 letters
Protection against UV rays?, 12 letters
Upper atmosphere protection?, 12 letters
Ecological concern, 14 letters
Sign on a vacationing atmospheric scientist's office? (mass), 11 letters
Antarctic environmental concern, 9 letters
High-level opening?, 9 letters
Opening on an environmentalist's agenda?, 9 letters
Problem linked to CFC's, 9 letters
Worrisome Arctic and Antarctic developments, 10 letters
Really tall NBA player?, 10 letters
Attorney for the Environmental Protection Agency?, 11 letters
Atmospheric region with a hole, 10 letters
Covering with a hole in it, 10 letters
Ecological concern, 10 letters
Environmentalist's concern, 10 letters
High-level stratum, 10 letters
Protection from ultraviolet rays, 10 letters
Purportedly weakening shield, 10 letters
Stratospheric stratum that protects the Earth from the Sun, 10 letters
Ultraviolet radiation blocker, 10 letters
Stratospheric cruise ship?, 10 letters
Ships carrying a smelly gas?, 11 letters
Drive-in theaters, in Variety slang, 7 letters
___ ether (hydrogen-peroxide solution), 6 letters
Cleaned without chlorine, 8 letters
Treats with a certain gas, 8 letters
A waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum, 9 letters
Some varieties are used in making ceresin and candles, 9 letters
A waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum, 9 letters
Some varieties are used in making ceresin and candles, 9 letters
Form genus of imperfect fungi, 7 letters