Which one of the following is not a main source of tax revenue for the federal government?
a. interest on the national debt
b. taxes on business earnings
c. taxes on personal income
d. social security taxes

If both the president and the vice president can no longer serve, who will become the next head of state?

Which is the most accurate description of the executive office of the president? groups of advisers who the chief of staff groups of advisers who the president groups of advisers who oversee national security groups of advisers who oversee the economy

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.