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.
The phrasing balanced budget implies that the revenue and expenses columns of the budget are equal, thereby achieving true balance. However, the balanced budget moniker only requires that revenues are at least equal to expenses. Revenues can exceed expenses in a balanced budget. In fact, a budget with a large surplus that is imbalanced outlandishly toward the revenue side of the balance sheet could still be termed a balanced budget.