Savannah often appears nervous and agitated; she frequently talks loudly and laughs almost uncontrollably. Her behavior is most likely to be diagnosed as psychologically disorder if it is:

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

Which factors slowed population growth in china until the 1300? a. one child policy. b. urbanization c. epidemics. d. warfare

Why do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?