Final answer:
Glacial ice shaped North America by shaping the landscape of New England, leaving visible striations in the rock, and carving out the Great Lakes.
Step-by-step explanation:
The actions of glacial ice in shaping North America include:
- Shaping much of the landscape of New England: Glacial ice in the form of continental glaciers carved out various landforms in New England, including valleys, hills, and fjords.
- Leaving large, visible striations in the rock: As glacial ice moved across the land, it scratched and ground down rocks, leaving striations or grooves on the surfaces.
- Carving out the Great Lakes: The Great Lakes were formed by the carving action of glacial ice during the last glaciation period.