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.
Half dollar. The term Half dollar may refer to a half-unit of several currencies that are named dollar. Normally, $1 is divided into 100 cents, so a half dollar is equal to 50 cents. Coins and/or banknotes of that amount are as such denominated at a value of 50 cents. More than a dozen countries are known to have their own unique dollar currency, out of these not all use the 50 cent piece or half dollar.