Explain how (if at all) each of the following events affects the location on an economic system's production possibilities curve.

b. The quality of education increases due to increased opportunities for post-high school education and/or training.

c. The number of unemployed workers increases during a recession.

d. A new technique improves the efficiency of extracting copper from ore.

e. A devastating hurricane destroys numerous production facilities such as in 2005 Hurricane Katrina.