Metamorphic grade refers to the temperature and pressure under which a rock was metamorphosed, considered low grade or high grade. Since metamorphic minerals in a rock form under specific conditions, they are used to identify the temperature and pressure of the metamorphic conditions.rotolith or parent rock is the rock type that a metamorphic rock was before it was subjected to metamorphic conditions.
Filtration occurs at the glomerulus, essential a highly coiled loop of tubular cells. Each kidney has millions of these cells. Arterial blood is pumped into the glomerulus. Water and ions are filtered via an osmotic gradient as well as other waste products.
Filtration is the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of some substance, called a filter. The liquid which has passed through the filter is called the filtrate.The filter may be paper, cloth, cotton-wool, asbestos, slag-or glass-wool, unglazed earthenware, sand, or other porous material. Filtration is very frequently employed in chemical technology, and it often presents great difficulties.r the filtrate may be drawn upwards through the filter, which is suspended in the liquid to be filtered; thus clogging does not occur so easily, as a large part of the precipitate settles to the bottom of the vessel and does not come in contact with the filter until most of the liquid has been drawn off.