Period 5 element dimethyl telluride, (CH)Te, a gas with a garlic-like odor which is exhaled in the breath of victims of tellurium toxicity or exposure. Iodine is the heaviest essential element utilized widely by life in biological functions (only tungsten, employed in enzymes by a few species of bacteria, is heavier). Iodine's rarity in many soils, due to initial low abundance as a crust-element, and also leaching of soluble iodide by rainwater, has led to many deficiency problems in land animals and inland human populations. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities. Iodine is
The Trace (Land Between the Lakes) The Trace (Land Between the Lakes) The Woodlands Trace National Scenic Byway, also known as "The Trace," is the major north–south roadway that traverses the Land Between the Lakes National Recreation Area in two counties in western Kentucky and northwestern Stewart County in northwest Middle Tennessee. It is estimated to be in length. The road is part of the National Scenic Byway system. Although it is not signed, it is listed on LBL's road logs as FD-100. The road is called "The Trace", which is what many roads and paths were called in pioneer times. "Trace" is short for "Buffalo