Results. A sodium test checks how much sodium (an electrolyte and a mineral) is in the blood. The normal values listed hereâcalled a reference rangeâare just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal.esults. A sodium test checks how much sodium (an electrolyte and a mineral) is in the blood. The normal values listed hereâcalled a reference rangeâare just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal.
The Missouri River is a tributary of the Mississippi River. Mountain Range A mountain range is a series of mountains ridges alike in form, direction, and origin. Plain Plains are flat lands that have only small changes in elevation. Peninsula A peninsula is a body of land that is surrounded by water on three sides. Valley A valley is a low place between mountains. Delta A delta is a low, watery land formed at the mouth of a river. It is formed from the silt, sand and small rocks that flow downstream in the river and are deposited in the delta. Island An island is a piece of land that is surrounded by water. Now letâs see what you know!
Quick Answer. The mouth of a river is another name for its terminus, where it meets an ocean, sea or lake. Because rivers generally carry abundant sediment and deposit it at the mouth, they often form deltas, or broad, shallow areas. The opposite end of the river is called the headwaters or the source; however, the headwaters are often formed by several discreet sources that all occur in the same general area.