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    • Question

      According to the USDA classification, which particle

      size defines “clay”?
      A <0.002 mm Correct Answer Incorrect Answer
      B 0.002–0.05 mm Correct Answer Incorrect Answer
      C 0.05–0.10 mm Correct Answer Incorrect Answer
      D 0.10–0.25 mm Correct Answer Incorrect Answer

      Solution

      The USDA classifies clay as particles smaller than 0.002 mm. Silt ranges from 0.002–0.05 mm, and sand is larger.

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