cracking a rock and making a U-shaped valley making a dune and making a U-shaped valley making a dune and making a V-shaped valley cracking a rock and making a V-shaped valley
What are two ways ice can change Earth's surface?

Options:
- cracking a rock and making a U-shaped valley
- making a dune and making a U-shaped valley
- making a dune and making a V-shaped valley
- cracking a rock and making a V-shaped valley

cracking a rock and making a U-shaped valley