Which is an important difference between the five themes and the several subfields in geography?

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

What are mountains that divide european russia from asian russia?