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ページの作成:「An element is any substance that is made of one type of atoms. There are almost 110 elements found by the scientists so far. They are linked on the periodic tab<br>Read m…」
VictorZaleski (トーク | 投稿記録) (ページの作成:「An element is any substance that is made of one type of atoms. There are almost 110 elements found by the scientists so far. They are linked on the periodic tab<br>Read m…」) |
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