create - make something new, design - plan structure, develop - improve or advance, device - tool or gadget, discover - find something new, do experiments - test hypotheses, do research - investigate thoroughly, electricity - power source, invent - create something new, invention - new creation, LED - light-emitting diode, penicillin - antibiotic, pollution - environmental contamination, react to - respond to stimulus, record - document information, reduce - make smaller, research - study in-depth, scientist - person who studies science,

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