Human Population Dynamics (id: d95502209)

本题目来源于试卷: Human Population Dynamics，类别为 IB环境系统与社会

[单选题]
Figure: Global Soil Db ffi::+8n awiab03 dbegr rk f:j.:vdxcvg9. zf.adation

Estimate what percent of the African continent is experiencing soil degradation.

A. 30%
B. 45%
C. 60%
D. 75%


参考答案:  C


本题详细解析:
The Sahara region (non-used wasteland) and the greenu 3*:2s8wyto mprgy( nf1g k;/z1fckb areas in western central Africa and southern Africa account f3pt1z*br(fgcomy:y k;gukn82s 1f/w or about 40% of the land area that is not experiencing soil degradation, so Option C seems the best estimate.

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