osteophagy is the practice in which animals, usually herbivores, consume bones.most vegetation around the world lacks sufficient amounts of phosphate. phosphorus is an essential mineral for all animals, as it plays a major role in the formation of the skeletal system, and is necessary for many biological processes including: energy metabolism, protein synthesis, cell signaling, and lactation.
bivalvia / ˈ b aɪ v æ l v i ə / , in previous centuries referred to as the lamellibranchiata and pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. bivalves as a group have no head and they lack some usual molluscan organs like the radula and the odontophore.they include the clams, oysters .
alabaster is a mineral or rock that is soft, often used for carving, and is processed for plaster powder. archaeologists and the stone processing industry use the word differently from geologists.the former use is in a wider sense that includes varieties of two different minerals: the fine-grained massive type of gypsum and the fine-grained banded type of calcite.
sandstone is a clastic sedimentary rock composed mainly of sand-sized 0.0625 to 2 mm mineral particles or rock fragments clasts .. most sandstone is composed of quartz or feldspar both silicates because they are the most resistant minerals to weathering processes at the earth's surface, as seen in the goldich dissolution series.like uncemented sand, sandstone may be any color due to .
toothpaste contains calcium carbonate or silica as a 'polishing agent' to remove plaque and other matter from teeth as the hardness of calcium carbonate is less than that of tooth enamel but more than that of the contaminating agent.
calcite is an ionic salt called calcium carbonate or caco 3. it forms under reasonably deep marine conditions from the gradual accumulation of minute calcite shells coccoliths shed from micro-organisms called coccolithophores .
mills at mirebeau-sur-bèze. a mill with ten pairs of cylinders and a pair of wheels is in action at mirebeau-sur-beze. it is one of the most important in the region, and can grind a hundred sacks of wheat a day. two metallic walkways allow workers to carry cereals stored in warehouses across the river to the mill.
the damage caused by calcium carbonate deposits varies on the crystalline form, for example, calcite or aragonite. 9 the presence of ions in an electrolyte , in this case, hard water, can also lead to galvanic corrosion , in which one metal will preferentially corrode when in contact with another type of metal, when both are in contact with an electrolyte.