Glaciers are enormous sheets of ice that slowly make their way down mountains in cold regions. Glaciers often come into contact with large rocks or boulders in their path as they slide downhill. What is the MOST likely effect to these rocks over time as they are in contact with the glacier?
A.
The rocks will slowly work their way uphill.
B.
The rocks will gain mass as particles from the glacier are added to them.
C.
The rocks will slice through the glacier ice, making large cracks.
D.
The rocks will be worn down and pushed downhill.