Classify each of the following based on the macroeconomic definitions of saving and investment. a. Rina purchases stock in Goohoo, an information technology company.
b. Jacques purchases a certificate of deposit at his bank.
c. Kyoko borrows money to build a new lab for her engineering firm.
d. Musashi takes out a mortgage for a new home in Detroit.

Alaska king crab fishing in the 1960s and '70s was a dangerous but rich fishery. boats from as far away as california and japan braved the treacherous gulf of alaska crossing to reach the abundant king crab beds in cook inlet and bristol bay. suddenly, in the early 1980s, the fishery crashed due to over fishing. all crabbing in those areas ended. to this day, there is no crabbing in bristol bay or cook inlet. a. how would an economist explain the decline of the alaska king crab fishery