Desertification, a process in which the biological productivity of the land is sharply degraded by human abuse and natural phenomena, helped cause the famines that have killed hundreds of thousands in recent years.
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Aa process in which the biological productivity of the land is sharply degraded by human abuse and natural phenomena
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Ba process of the biological productivity of the land being sharply degraded by human abuse and natural phenomena
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Ca process of human abuse and natural phenomena that sharply degrade the biological productivity of the land
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Dwhich is the process of human abuse and natural phenomena sharply degrading the land's biological productivity
分析该选项
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Ewhich is the process of human abuse and natural phenomena that sharply degrade the land's biological productivity
分析该选项