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JAMB Biology 2016 Question 30

Question 30

Soil

Erosion can be reduced along a slope by

  1. A.ridging across slope
  2. B.ridging up slope
  3. C.ridging down slope
  4. D.crop rotation.
Show the answer and explanation

Answer: A (ridging across slope)

Explanation

Ridges made across the slope (contour ridging) stop rain water from running straight down and carrying soil away.