Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:
Correct answer: A. Extremely high
- A. Extremely high
- B. Extremely low
- C. Very little
- D. None of these
Explanation
Colloids are extremely small particles, so a given mass exposes a very large total surface area. This high surface area allows adsorption and provides sites for chemical reactions and microbial activity.
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