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 neurotoxin. It is much more dangerous for children than adults because it affects kidsâ developing brains and nervous systems. The younger the child, the more harm lead can cause. Lead can cause serious health effects: 1  kidney problems. 2  anemia. 3  hearing loss. 4  developmental delay, or losing earlier skills.