Depletion - Reduction, or less of something, Layer - A thin substance on top of a surface, Hole - An opening through something, Protect - To keep safe from harm or injury, Heat - To make or become warm, Change - Alter or modify, Pollution - Harmful or poisonous substance in the environment, Damage - Causing physical harm, Exposure - How contact with substances affects environments, Stratosphere - Layer of the Earth's atmosphere above the troposphere, Formation - Creation, CFCs - Chlorofluorocarbons- molecules harmful to the ozone layer, Ultraviolet radiation - Energy that comes from the sun, Greenhouse Gases - Gases present in the atmosphere that absorb radiation, trapping heat., Montreal Protocol - International afreement to phase out ozone-depleting substances, Ozone Layer - A layer in the Earth's stratosphere,

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