Answer:
I believe they are called hydrologists.
Explanation:
In what is now Canada and the US, firstly the indigenous peoples mostly had a nomadic existence (except for tribes like the Haida who had more or less permanent villages) whereby they followed the game to wherever it was plentiful and derived their economy and material culture partly from it (as in hides for clothing). This would be the case in the hunt for buffalo, and also for deer and caribou in the north. The exception was Mexico, where large agricultural societies developed and were mostly sedentary. In modern times, it is common for small migrations of people to occur like when one mine is closing down and the mine workers move sometimes almost en mass to another mine which could be 1000's of km away.
B. It sits on the largest deposits of oil in the world.
They differ in some social and ritual customs, and in some aspects of their cuisine.
These 'surface' differences stem from their respective historical geographic origins. The history of the 'Sephardim' springs from western Europe and North Africa, including Spain, Portugal, Turkey, Morocco, Egypt, and Arabia. The history of the 'Ashkenazim' is rooted in Eastern Europe, including Germany, Poland, the Baltics, Russia, and the 'Stans' ... Tajik, Kazakh, Uzbek, etc.
One fascinating feature of this split, isolated evolution of Judaism ... and there are many ... is the fact that even though the two streams evolved, with almost zero contact, for as much as 1,000 years, a Sephardic Torah scroll and an Ashkenazic Torah scroll are totally identical, down to the last character in every one of their 10,290 lines of text written in 245 columns.