Want to know how your supermarket produce was grown? Then check its price look-up code (PLU). Those little stickers affixed to your pears and potatoes reveal a lot more than how much you'll pay. If the number is:
5 digits, starting with 8 - The produce was genetically modified.
5 digits, starting with 9 - The produce was grown organically.
4 digits - The produce was grown conventionally (neither organic nor genetically modified).
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