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.
USDA Definition of Specialty Crop . The purpose of this document is to facilitate coordination among the various US Department of Agriculture (USDA) agencies with programs that address the needs of specialty crop producers, handlers and processors. Although a common definition of specialty crops across these agencies is desirable for USDA stakeholders and customers, it is also recognized that the mission of each agency is unique and so the application of a