* What is used to determine the relative age of two rocks?

(image below)

Question 4 options:

a)

Vertical position

b)

the presence of unconformities in the rocks

c)

radioactive dating of each layer

d)

relative age cannot be determined

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.