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Biology, 14.02.2022 14:00 icantspeakengles

Why does mature soil contain the most humus? A. The mature soil has the most soil horizons
B. Has the least decomposed organic material from trees and vegetation
C. Has the most decomposed organic material from trees and vegetation
D. The mature soil has the biggest layer of bedrock

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Why does mature soil contain the most humus? A. The mature soil has the most soil horizons
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