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.
A coalition government is a cabinet of a parliamentary government in which several political parties cooperate, reducing the dominance of any one party within that coalition. The usual reason given for this arrangement is that no party on its own can achieve a majority in the parliament.