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.
Under the Tenth Amendment to the U.S. Constitution, all powers not granted to the federal government are reserved for the states and the people. All state governments are modeled after the federal government and consist of three branches: executive, legislative, and judicial.The U.S. Constitution mandates that all states uphold a republican form of government, although the three-branch structure is not required.ost Americans have more daily contact with their state and local governments than with the federal government.