science experiment
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3 defs 66 6 defs 66 6 defs 64 7 defs 60 3 defs 67 3 defs 68 3 defs 56 6 defs 55 3 defs 51 3 defs 46 3 defs 52 3 defs 52 3 defs 47 7 defs 48 4 defs 48 6 defs 46 2 defs 51 3 defs 62 3 defs 48 6 defs 43 6 defs 42 3 defs 45 3 defs 44 2 defs 46 3 defs 39 3 defs 42 6 defs 41 3 defs 45 5 defs 42 5 defs 45