Sodium (Na) in Blood. Guide. A sodium test checks how much sodium is in the blood. Sodium is both an electrolyte and mineral. It helps keep the water (the amount of fluid inside and outside the body's cells) and electrolyte balance of the body. Sodium is also important in how nerves and muscles work.hy It Is Done. A blood test to check sodium levels is done to: 1  Check the water and electrolyte balance of the body. 2  Find the cause of symptoms from low or high levels of sodium.
Many of the lakes on the Canadian Shield, including those of the Great Lakes, were created by glacial erosion. Glacial Deposition A large part of the surface of a glacier is covered with a coating of sediment and rock debris.
water erosion can beat up against a rock and erode away sediment +++ That's a fair stab at how sea-caves develop, but in limestone the action is dissolution by ground water o â¦ f the rock's calcium carbonate, its primary constituent. mountain is a sharpened peak formed by the glacial actions of three cirques on a mountaintop. Since we know that a cirque is a bowl-shaped basin formed by EROSION and a moun â¦ tain horn is formed by three CIRQUES it becomes clear that mountain horns are formed by erosion.