Railroad crossing signs come in what two kinds of shapes? A. Circle and crossbuck
B. Circle and pentagon
C. Octagon and equilateral triangle
D. Diamond and cross buck

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends

Why was george washington being elected unanimously important? it indicated how much respect and popularity he had gained. it paved the way for other unanimous elections. it meant that he would be president forever. it meant that he voted for himself.

What does the ricardian theory state? a. countries should produce all goods and services if they canb. countries should not produce goods and services that minimize opportunity costsc. countries should import goods and services if they are cheaper in other countriesd. countries should export all goods and services if they make a profit