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WAEC Biology 2022 Question 32

Question 32

Soil

The diagram is an illustration of an experiment on sedimentation of soil.
The part labelled IV is

Diagram for this question
  1. A.silt
  2. B.sand
  3. C.humus
  4. D.clay
Show the answer and explanation

Answer: B (sand)

Explanation

The heaviest, coarsest particles settle first at the bottom; IV is the bottom layer of sand (above any gravel), with silt and clay above it.