Lead is toxic because it aggressively replaces essential metals in the human body. In biochemical reactions, lead takes the place of substances such as zinc, calcium and iron in molecules and protein enzymes. This change... More »

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Statins are enzyme-inhibiting prescription drugs used to lower cholesterol and decrease the risk of stroke or heart disease. More than 25 percent of Americans over the age of 40 use statins, according to Everyday Health. More »

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In a communist society, private ownership is almost nonexistent; the government owns and controls property, education, agriculture and means of production. The idea of communism was first theorized by Karl Marx in 1848. More »

None of the three chemicals most commonly used in dry fire extinguishers is acutely toxic. One component, monoammonium phosphate, has the potential to cause minor skin irritation and is classed in the same category as ac... More »

Metals that are potentially toxic are known as heavy metals, which include mercury, lead, iron, bismuth, cadmium and thallium. Arsenic, which is a non-metal but exhibits metallic properties, may also result in poisoning. More »

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The density of lead is 11.34 grams per cubic centimeter. In U.S. measurement, the density of lead is just over 0.41 pounds per cubic inch. More »

Zinc is usually found in mineral deposits that include copper, lead, iron and other base metals. Its primary ore is sphalerite, which accounts for about 95 percent of zinc produced worldwide. China is the largest zinc pr... More »