本题目来源于试卷: Soil Structure & Systems，类别为 IB环境系统与社会
[单选题]
Figure: Typical soil due ek 8qk-f*c 4-bow5p ntn 4g)2bzw/,ojwsa+k89p itrofile diagram
In the figure, identify what the top or “O” layer is often referred to as:
A. The Outer Layer
B. The Oxygen Layer
C. The Organic Layer
D. The Zero layer
参考答案: C
本题详细解析:
The top thin layer is referred toxd s:kb n3 c,n e.44fi:8ktmac 6sekb( as the “Organic” layer, so option C is the correck bae: 3tnc4nsc.(d e,:f8 x6msk4ki bt choice.
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