Often the fruits and vegetables sold in the supermarket carry a sticker with a PLU code, that code doesn’t just tell the cashier how to ring up your produce it tells you how the food was grown and whether or not it was genetically modified.
Produce that has been conventionally grown consists of 4 numbers and organically grown produce has 5 numbers prefaced with the number 9. The PLU code on produce that has been genetically modified also has five numbers but the number is prefaced with the number 8.
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