Some glaciers move in part by a process called ____.
a. basal sliding
b. ablation
c. abrasion
d. sublimation
Question 2
A logical and probable explanation for moving lithospheric plates is ____.
a. the breakup of an ancient paleocontinent by volcanic eruptions
b. the presence of convection currents in the mantle
c. the reversal of the magnetic poles
d. the rapid shrinking of Earth's interior