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WAEC Geography 1996 Question 20

Question 20

Rivers and River Landforms

The predominant action at the upper course of a river is

  1. A.saltation
  2. B.transportation
  3. C.deposition
  4. D.corrosion
  5. E.corrasion
Show the answer and explanation

Answer: E (corrasion)

Explanation

In the steep upper course the river cuts down its bed mainly by corrasion: rocks it carries grind against the bed.