Bone structure can vary depending on the type of bone, but there are some generalizations. Bones consist of three different kinds of cells. Vertebrate bones are composed of a substance called hydroxyapatite, which is made of calcium phosphate.
Balanced generally is positive terminology for a government that equally represents all the interests and parties of a nation in its government. Divided government is the negative form where these interests clash and nothing gets done in government because the parties have equal power and never agree.
In republican government, the legislative authority necessarily predominates.. Checks and balances, in reference to the three branches, is a myth. There are some checks, there is a separation of powers, but there is no balance. A cursory glance at the Constitution tells you the Congress can basically do whatever it wishes, including modify the Constitution if it sees fit to.