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Author Question: Why does iron, when added to quartz, cause the purple color of amethyst? A) The presence of trace ... (Read 111 times) |
Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
In 1864, the first barbiturate (barbituric acid) was synthesized.