when carbon reacts with oxigen - you get carbone dioxide, if you throw a ball up, - it falls down again, if you mix blue and yellow paint, - you make green paint, when you freeze water, - it turns to ice, if you put sugar in water, - it dissolves, if you set fire to paper, - it burns, if you don´t like plants, - they die, when you boil water, - you produce steam,

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