Find the variable on each diagram

What was istanbul called before he ottomans conquered the city in the 15th century

Which theory suggested that the earth was once a signle supercontient that gradually that broke up into the contients that we know today

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.