One suggested cause of bipolar disorder is an increase in brain structures related to emotions, including the amygdala. Additionally, some research has suggested that unusually high levels of norepinephrine activity are also responsible for the symptoms of this illness. On the contrary, it is possible that the illness causes these changes in brain areas and neurotransmitters. This uncertain direction of effect demonstrates which of the six principles mentioned in your chapter

17 points! ! (explain your answer)

Mankiw attributes – chapter 1 and his 10 principles – differences in living standards within a countryover time and across countries at a moment in time to: a. the presence or absence of inflation and unemployment. b. the allocation of resources between private markets and the public sector. c. those that have dealt successfully with the efficiency v. equality tradeoff and those that haven’t. d. differences in productivity. e. ones that think at the margin and respond to incentives and those that don’t.

According to the theory of mercantilism, a country is strengthen by