B farming produce a surplus of food
I would suggest you start by matching countries to the cities you recognize. For example, Rome is in Italy, which means that "Italy" is N. If you are unsure about others, I'm sure you can google a map of Europe and that will help you fill out the rest :)
Answer:
Groundwater.
Explanation:
Becasue it's underground and not on the surface.
"The OPEC oil embargo" was the reason of the oil crisis during the 1970s among the choices given in the question. The correct option among all the options that are given in the question is the third option or option "C". I hope the answer has actually come to your desired help.
