Factors Influencing Soil Formation
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Questions and Answers

What is the main source of the biotic material in the soil?

  • Deposition of dust and debris
  • Decomposition of rocks and minerals
  • Accumulation of chemical fertilizers
  • Decomposition of the remains of plants and animals (correct)

    • What is the role of microorganisms and other organisms in the soil?

  • They produce chemical fertilizers
  • They help to decompose the dead organic materials (correct)
  • They compete with plants for resources
  • They help to deplete the soil nutrients

    • How does the proportion of humus in the soil affect its fertility?

  • Humus makes the soil less fertile
  • If the proportion of humus is greater, the soils become fertile (correct)
  • Humus decreases the soil fertility
  • Humus has no effect on soil fertility

    • What is the relationship between climate and the rate of soil formation?

    <p>Soil formation is faster in regions with high rainfall and higher temperatures</p> Signup and view all the answers

    How does the use of chemical fertilizers and insecticides affect the soil?

    <p>It leads to the degradation of soils</p> Signup and view all the answers

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