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.
Sources Of Lead Exposure The main source of lead poisoning is lead-based paint and lead-contaminated dust. Lead-based paints were banned for use in housing in 1978. Lead contamination in the home comes primarily from old lead-based paint that is deteriorating or rubbed off friction surfaces, such as windows and doors.