The lithophile elements make up about 93 percent of the mass of the entire crust of the earth and about 97 percent of the salt content of the ocean watersâproducts of rock weathering dissolved in water.hey include 55 elements of the periodic system: O, Si, Al, Ti, B, C, all the alkali and alkaline-earth metals, the halogens, and many of the rare elements.
The United States is a federal constitutional republic, in which the President of the United States (the head of state and head of government), Congress, and judiciary share powers reserved to the national government, and the federal government shares sovereignty with the state governments.he United States is a federal constitutional republic, in which the President of the United States (the head of state and head of government), Congress, and judiciary share powers reserved to the national government, and the federal government shares sovereignty with the state governments.
The central government is the political authority that governs an entire nation. The United States is a federal system of government in which power is shared between the central (sometimes referred to as national or federal) government and state governments.In the U.S., power is given to the central government, located in Washington, D.C., by the United States Constitution.s you can see, the role of the central government in our lives is significant. As public opinion changes and lawmakers respond, the roles of central government can expand and contract as necessary to meet the needs of the citizens of the United States.