In which layer of the earth does the tempature vary a. inner core b. outer core c. mantle d. crust

D.haka is the first answer and a.canberra is the second answer

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.

B  maybe the answer hoped it  

Economy is the answer