The tastiest cuts of beef are often the ones with more fat. But when you're concerned about your health or you're trying to watch your weight, you want the leanest cuts of beef. You don't necessarily have to sacrifice flavor by choosing lean cuts of beef, though. Use this guide on cuts of beef to make smart choices.
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO 3).
Limestone is a sedimentary rock composed of the mineral calcite (calcium carbonate). The primary source of this calcite is usually marine organisms.ure limestones are white or almost white. Because of impurities, such as clay, sand, organic remains, iron oxide and other materials, many limestones exhibit different colors, especially on weathered surfaces. Limestone may be crystalline, clastic, granular, or dense, depending on the method of formation.