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layer – n. amount of something spread over an area
ultraviolet – adj. rays of light that cannot be seen
chlorofluorocarbon – n. an organic compound that damaged the ozone layer
aerosol – n. a substance like hair spray kept in a container under pressure that is released in a fine spray when a button is pushed
confident – adj. a feeling or belief you can do something well
global – adj. involving the entire world
greenhouse gas – n. a gas in the atmosphere that absorbs and emits radiation, causing greenhouse effect and warming of Earth’s temperature
