True or false:
the first civilizations grew around rivers, and there were 4 main ones. they included egypt, sumer, indus civilization, and shang china.

Which tools are visuals that geographers use to interpret the world? choose all answers that are correct. question options: maps satellites graphs sensors

What two properties affect the density of ocean water

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.