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.
Health effects of arsenic and lead Arsenic and lead are toxic metals and can be harmful to humans, especially children. They pollute the soil in many parts of Washington near former smelters, and old orchards where lead arsenate pesticide was used. They can also be found in products used in our daily lives. Sources of lead include old paint, gasoline, and lead plumbing.