Which physical characteristics have played a role in the environmental problems of north africa and southwest asia? choose all that apply.

a. abundant soil nutrients
b. desert ecosystems
c. petroleum resources
d. plentiful precipitation

The awser to your questions is C I think try it

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.