Laboratory analysis of water samples have shown that the level of arsenic in ground water exceeds the legal threshold. The responsible authority closes the affected well.
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Laboratory results have shown that tea leaves are often contaminated with pesticide residues, although the level of contamination is below the legal threshold. It is now determined what the health consequences are of long-term consumption of tea made of contaminated leaves.
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A brochure is published and distributed to inform pregnant women to limit their consumption of fish to reduce intake of heavy metals.
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From each batch of chicken delivered to the slaughterhouse, five samples are taken and tested for Salmonella spp to understand the development of Salmonella contamination in poultry production.
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There are two different slaughterhouses. In the first one, pigs are eviscerated on the ground and water in buckets is used to rinse the carcasses. In the second one, pigs are eviscerated while hanging on a hook and a water hose is used to rinse the carcasses. A study is conducted to compare differences in bacterial contamination of the carcasses between the two slaughterhouses.
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3.1 Question 2
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