Answer:
Yes, glaciers are responsible for the origin of smooth troughs cutting across the landscape in the Great Lakes area.
During the last Ice Age, which ended around 10,000 years ago, the Great Lakes region was covered by a massive ice sheet. As the glacier advanced, it scoured the landscape, picking up rocks and soil and grinding them against bedrock. This process of erosion created deep troughs in the bedrock, which were then filled with water as the glaciers melted.
These troughs, known as glacial troughs or U-shaped valleys, are characterized by a wide, flat bottom and steep sides. They often contain lakes or rivers, such as the Great Lakes themselves, which were formed by the melting of the glaciers. The movement of the glacier also created other glacial features such as moraines, drumlins, and eskers, which are common in the Great Lakes area.
Step-by-step explanation:
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