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 fertile place in the desert where there is water and some  vegetation is sometimes referred to as an oasis.This area often  contains an abundance of wildlife. have lived well over half my life (40+ years) in the Chihuahuan Desert but have traveled through, hiked and camped in every major desert of the United States and Mexico. I have also traveled the entire length of the Atacama Desert in Chile by land.