Contamination Crisis: Fever Strikes Food Prep Area

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· dioxins and polychlorinated biphenyls (pcbs) are toxic chemicals that persist in the environment and accumulate … · process contaminants are substances that form in food or in food ingredients when they undergo chemical … · chemical contaminants are substances that are unintentionally present in food or feed. These substances may be … · the role of the environment in the seed contamination at grower level, and of cross‐contaminations along the seed supply … · contamination和pollution的区别：用法不同、侧重点不同。 一、用法不同 contamination 作名词使用有：污染，致污物， …