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    Exam 4: Ecosystems: What Are They, and How Do They Work
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    What Is Associated with the Presence of Red and Yellow
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What Is Associated with the Presence of Red and Yellow

Question 171

Question 171

Multiple Choice

What is associated with the presence of red and yellow in a soil horizon? 


A)  a high percentage of lime and gypsum 
B)  a lack of iron oxide 
C)  a low organic matter content 
D)  a high percentage of sand

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