Rocks and Soils

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Multiple Choice

Which of the following are ‘active’ agents for soil formation?

  1. Climate
  2. Time
  3. Parent material
  4. Biota
  5. Topography
  1. Only 1, 3 and 4
  2. Only 1, 3, 4 and 5
  3. Only 2, 3 and 4
  4. Only 1 and 4
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