Question : The sideways erosion that widens the river valley is called
Option 1: lateral erosion
Option 2: vertical erosion
Option 3: side erosion
Option 4: mean erosion
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Correct Answer: lateral erosion
Solution : The answer is lateral erosion.
The river becomes more profound due to vertical erosion, while lateral erosion erodes the banks and forms a cliff. In lateral erosion, the river erodes its banks and widens the river channel. It is also known as sideways erosion. A V-shaped river valley may be found in the upper course of the river, formed by both vertical and lateral erosion combined.
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