The structure of Earth can be defined in two ways: by mechanical properties such as rheology, or chemically. Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core. The interior of Earth is divided into 5 important layers. Chemically, Earth can be divided into the crust, upper mantle, lower mantle, outer core, and inner core.
flat dollar. Definition. A description of an absolute amount, as opposed to an amount determined as a function of another amount, such as a percentage. Most Viewed.
The United States dollar, or the American dollar, is the official currency, or money, of the United States of America. When writing, the symbol for the American dollar is the dollar sign ($). Dollars can also be known as USD (U.S. Dollar). Front of a US dollar bill. The American one dollar bill has a picture of George Washington. There are paper bills that are worth 1, 2, 5, 10, 20, 50, and 100 dollars. One of the unique things about the U.S dollar system is that all of the notes are the same size. This is the only country in the world to have this type of system. In others the size of the note goes up as the value does.