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.
fiat money. Definition. Money which has no intrinsic value and cannot be redeemed for specie or any commodity, but is made legal tender through government decree. All modern paper currencies are fiat money, as are most modern coins. The value of fiat money depends on the strength of the issuing country's economy.