Answers. Relevance. Rating Newest Oldest. Best Answer: a Spanish term that was formerly used in the Spanish Empire to designate people of mixed European (Spaniard) and Amerindian ancestry living in the region of Latin America.[1] The word originated from the Romance language / Latin word Mixticius, meaning mixed.
For centuries, lead toxicity has been one of the most significant preventable causes of neurologic morbidity from an environmental toxin. A heavy metal, lead is ubiquitous in our environment but has no physiologic role in biological systems.
Lead is a metal found in the earth, and it is a poison. For years, lead was used in paint, gasoline, plumbing and many other items. Lead can still be found in some products sold today. As these things are used or get worn out, the lead they contain can spread.Lead paint was banned from home use in 1978. If you live in a home built before 1978, or near a busy road, there could be lead in your house dust and soil.ften, lead poisoning is caused by lead you can't even see. Dust from lead paint is still the number one source of childhood lead poisoning. Lead poisoning can cause problems with a child's growth, behavior, and ability to learn. Lead can also harm babies before they're born.