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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are five factors for soil formation – parent material, time, climate, biota and relief/topography. Among these factors, climate and biota are called the active agents because they act on the rest of the three factors, which are called ‘passive agents’ for the formation of soil.

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