Jack tries to place magnets on the door of his refrigerator he observes that the magnets don’t stick he guesses that the door of the refrigerator is made of non-metallic substance what stage of scientific

Jack tries to place magnets on the door of his refrigerator he observes that the magnets don’t stick he guesses that the door of the refrigerator is made of non-metallic substance what stage of scientific investigation does his guess represent

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