Explain why there are large and long depressions on the ground in the Laurentian Shield.
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it is part of the earth's crust that has been exposed by glacial erosion. It has a thin layer of topsoil, so doesn't support agriculture, but does have trees, mostly coniferous. There are minerals that are mined, nickel, copper, gold etc
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Explanation:
Essentially, it is part of the earth's crust that has been exposed by glacial erosion. It has a thin layer of topsoil, so doesn't support agriculture, but does have trees, mostly coniferous.
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