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toxicity questions

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1. Provide three reasons for children's high susceptibility to lead (Pb) toxicity, when compared with adults.
2. Current reference dose for oral exposure to methylmercury is 0.1 ug/kg of body weight (U.S. EPA, February 2004). For a woman of 60 Kg, the reference dose is equivalent to ingesting 6.0 ug per day. Question: Based on the median concentrations of Hg in the aquatic species in Table H (see below), assuming 90% of the Hg is methylmercury, which of the items the woman can consume in the amount of 0.25 kg per day to keep the exposure below 6.0 ug/day?
3. Is trimming off skin and fat of methylmercury contaminated fish an effective method to decrease exposure? Please explain your answer.
4. Identify the susceptible populations of arsenic toxicity.
5. Identify the susceptible populations of cadmium toxicity.

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The solution provides detailed explanation for children's high susceptibility to lead, methylmercury, arsenic toxicity and cadmium toxicity

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