I believe your answer would be A- Farmers and urban dwellers.
Hope this helps. Correct me if I'm wrong.
Pacific mountain system, series of mountain ranges that stretches along the Pacific Ocean coast of North America from northern British Columbia (Canada) to northwestern Mexico. They run for some 4,500 miles (7,250 km) in the United States and extend northward into Canada for another 1,000 miles (1,600 km).
Answer:
uh water? or atoms
Explanation:
because we made of wader, and stuff, and but atoms made water sooo (sorry im not smart this is really weird answer)
Answer:
Some cratons in Canada and Greenland shelter the oldest continental rocks in the world, about 4 billion years old. Other cratons in South Africa, Australia and Asia have continental rocks that are 3 billion years old. The oldest seafloor is comparatively very young, approximately 280 million years old.