The Very High PH Levels Found in Some Arid Region

question 31

Multiple Choice

The very high pH levels found in some arid region soils are most likely due to high levels of exchangeable _____.

• A)Al³⁺
• B)Al(OH)₂⁺
• C)Ca²⁺
• D)Mg²⁺
• E)Na⁺

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