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5 Written questions

5 Matching questions

  1. b
  2. v
  3. r
  4. w
  5. jj
  1. a Plinthite accumulation, very dense layer of oxides in tropical areas
  2. b Weak clay accumulation, B
  3. c Weathered bedrock, C
  4. d buried layer
  5. e cryoturbation (frost churning)

5 Multiple choice questions

  1. H2PO4-, HPO42-, Nucleic acids, ATP, ADP
  2. Residual
  3. Humus, only B
  4. concretions: dense mass of secondary minerals in a horizon; B or C
  5. gain of electrons

5 True/False questions

  1. iPhysical root restriction: naturally occurring or man-made unconsolidated material, very compacted layers

          

  2. Mass Flow (convection)a combination of all management and land-use methods that safeguard the soil against deterioration by natural or man-induced factors

          

  3. gFrozen soil

          

  4. Rslightly decomposed only with O

          

  5. CarbonationCO2, cell wall component, carbohydrates

          

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