#1

a) explain the theory of plate tectonics.

b) how does it account for the mid-atlantic ridge?

c) how does it account for volcanic island chains like hawaii?

（if answer in handwriting way, make it readble）

Plz hury on a timer which statements explain what happens at deep-ocean trenches? check all that apply. crust is formed. mountains are formed. seafloor spreading occurs. crust becomes molten rock. denser plates slide under lighter plates.