Exchange rates and banking systems are often the variables through which the contagion effects of a crisis are spread from one country to another

Self- reinforcing mechanisms that cause the poor to stay poor are called:

A. poverty traps. B. societal traps. C. social networks. D. social aberrances.

Comparing a uniform abatement policy, pollution tax and a command-and-control policy, which one the is most efficient approach in dealing with pollution?

A. pollution tax B. uniform abatement C. command-and-control D. All of these are equally efficient