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Potato on a glass plate with a square cut out of it
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Glass jar of enzymes
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Boy using tweezers to examine an onion cell, onion on counter
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Profile of boy looking into microscope with dish of moss next ...
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Potato with a square cut out of the top on a glass dish on pin...
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Three potatoes on dishes on different coloured paper, one with...
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Hand putting liver into jar of clear liquid.
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Clear jar of liver in liquid.
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Hand holding lit match over jar of slightly yellowed liquid co...
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Boy in yellow t-shirt with rubber gloves on using a dropper to...
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Boy in yellow t-shirt and rubber gloves holding filled test tube
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Wooden rack of test tubes filled with different coloured liquids
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Green square of paper with yellow and blue squares on top
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Green square of paper with yellow and blue squares stuck on, g...
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Hand placing yellow square on green square of paper covered in...
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Geen square of paper covered in yellow and blue squares
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Boy dropping spoonful of salt into glass cyclinder of water
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Boy holding empty spoon over clear cyclinder of water
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Green square of paper covered in a few yellow and blue squares
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Green square of paper filled with squares of yellow and blue
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