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      Question

      The "Albedo" of a crop surface refers

      to:
      A Its water requirement Correct Answer Incorrect Answer
      B The fraction of solar radiation reflected by it Correct Answer Incorrect Answer
      C The depth of its roots Correct Answer Incorrect Answer
      D Its resistance to pests Correct Answer Incorrect Answer

      Solution

      Crops with high albedo (like those treated with Kaolin) reflect more sunlight, stay cooler, and transpire less.

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