Umuhanga mu butabire w’Umufaransa, Antoine Lavoisier yigeze kuvuga ati “Nta na kimwe kigenda buheriheri kandi nta na kimwe gishya kivuka, ahubwo ibintu birivugurura.”
Inkomoko yo gushishura, indwara itavugwaho rumwe ikunze guteza umwuka mubi mu bahanzi
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