Silver is a whitish precious metal and has been used since about 4000 BC for various purposes such as money, silverware, jewelry and so on. Silver is measured in troy ounces. A troy ounce is 31.10348 grams.
Food Desert Locator from the USDA. GoodFood World Staff, May 4th, 2011. The official definition of a food desert is a low income census tract where at least a third of the residents are a mile from a supermarket or large grocery store.
A desert is a region of the Earth that receives little or no precipitation; either rain or snow. Theyâre often some of the hottest, most inhospitable places on Earth, Death Valley in the US. But deserts can be cold too, like in the Arctic and Antarctica. Altogether, deserts make up one-third of the surface of the Earth.