Preservatives are added to foods to help prevent or slow spoilage due to bacteria, molds, fungi or yeast, as well as to slow or prevent changes in the food's color, flavor or texture, delay rancidity, and maintain freshness.
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Not clear question type again
Over the counter drugs are substances that alter the body's norml function, that are usually beneficial, and do not require a prescription to buy.
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The answer would be : 10.
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Photon