Water Usage in Arid Regions – Phoenix, AZ. Follow the feature highlighted by the Problem 14 placemark to the west (continue across the tunnels/pipelines that look like gaps). Where does it ultimately originate (the Problem 15 placemarks highlight the ends of a long tunnel)? Choose one: Colorado River Pacific Ocean a glacier in the Sierra Nevada Gulf of California

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.