The law of superposition is a statement that says rocks on the bottom are always older than the top and the top is always younger than the one on the bottom... It is used to tell which rock layer or fossils are older/younger..
Hope that helps..Im not very good at explaining things..
Answer:
A convergent boundary is an area where 2 or more plates collide. 1 plate slides underneath the other causing subduction.
Beds of marble metamorphic rock
