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 United States has a federal government and each of the 50 states has a state government. This lesson explains the organization of state governments, and explores the powers and responsibilities of state governments.tate governments must also work well with the federal government. For example, state governments often work with the federal government on large public works projects, like interstate highways, that are of benefit to the states.