Multiple choice

Soils are usually formed by the process of

  1. erosion

  2. deposition

  3. denudation

  4. weathering
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil formation occurs through weathering - the breakdown of rocks and minerals through physical (temperature changes, frost), chemical (dissolution, oxidation), and biological (plant roots, microorganisms) processes. Erosion moves soil but doesn't create it; deposition is the settling of eroded material; denudation is the overall process of wearing down landscapes.

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