The lithospheric plates move an average of _____.
a. 5 inches per year
b. 50 inches per year
c. 50 centimeters per year
d. 5 centimeters per year
The lithospheric plates move an average of _____.
a. 5 inches per year
b. 50 inches per year
c. 50 centimeters per year
d. 5 centimeters per year