| http://www.w3.org/ns/prov#value | - Research of chemical residues in food has shown that the greatest problems are presented by lead and cadmium: lead has been detected in practically all foodstuffs, while lead is mostly presented in fish and meat products, a little less - in carrots, grain; cadmium is mostly detected in fish and plant products, in meat - a little less, but a smaller amount of products is contaminated by cadmium and
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