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1:23
Environmental health study called for area near Sarnia, Ont.: Health Minister
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2 个月之前
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SOLVED: An important environmental/health study involved children who lived within 7km of a large ore smelter in El Paso, Texas. A smelter is used to melt the ore in order to separate the metals in it. Because the smelter emitted lead pollution, there was concern that these children would somehow suffer. We want to investigate the possible effect of lead exposure on "performance" IQ scores as measured by the Wechsler intelligence scale. Based on blood lead levels, the children were partitioned i
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