Question

What are in constant motion and change the forms of the earths crust

Answer 1

Tectonic plates

Step-by-step explanation:

it's the answer for apex

Answer 2

tectonic plates

Step-by-step explanation:

The lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates.