Thousands of years ago, sheets of ice covered much of Canada. As Earth grew warmer, the ice began to melt and move. This action led to the flattening of once-high areas into plains. What physical process does this scenario describe?
Answer
A
soil building
B
volcanic activity
C
water collection
D
erosion
Explanation
Moving ice wears away and carries off rock and soil, gradually lowering high areas and shaping the land. This process is erosion, so the correct choice is “erosion.”
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