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Feb 12, 2018, 9:05:00 PM
Which substance would be predominate in the top layer of soil? A. Pumice B. Humus C. Calcite D. Quartz
Feb 13, 2018, 5:21:27 AM
b: Humus Hope this helps!
Which substance would be predominate in the top layer of soil? A. Pumice B. Humus C. Calcite ...
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Which layer of soil has little or no humus?
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