Multiple choice

Which of the following factors contribute to different colours of the soil?

  1. Soil erosion

  2. Soil mineralogy

  3. Soil biodiversity

  4. Microorganism
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil color is primarily determined by its mineral composition. Iron oxides produce red, yellow, and orange hues; organic matter gives dark brown or black colors; high calcium carbonate can cause white coloring. Soil erosion (A) moves soil but doesn't determine its color, while biodiversity (C) and microorganisms (D) affect soil chemistry but aren't the primary color determinants.

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