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Why does food expire?

Updated: 8/18/2019
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Wiki User

12y ago

Best Answer

Food expires because of decay. Bacteria is everywhere and on everything. There are things that justify how long food will stay "fresh" Bacteria thrives in humid, warm, and climates with plenty of air. Keeping your food cold, sealed from air and dry will keep your food longer.

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9y ago
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Wiki User

12y ago

If u leave foood in the refg or frizzer to long it will expire

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