| http://www.w3.org/ns/prov#value | - ??? ??? ??? chlorofluorocarbons Chemical substance, found mainly in liquid coolants, that damages the earth's protective ozone layer. ??? ??? ??? Pangaea The primeval supercontinent, hypothesized by Alfred Wegener, that broke apart and formed the continents and oceans as we know them today. ??? ??? ??? Photosynthesis Process by which plants and some other organisms use light energy to convert wate
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