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JAMB Biology 1985 Question 48

Question 48

Soil

The origin of mineral particles in the soil is

  1. A.humus
  2. B.water
  3. C.micro-organisms
  4. D.weathered rock
  5. E.organic matter.
Show the answer and explanation

Answer: D (weathered rock)

Explanation

Sand, silt and clay particles are formed when rocks are broken down by weathering. Organic matter forms humus.