保护土壤的措施可以防止土壤被风吹走，或被水冲走。良好的土层可以为人类和动物提供粮食。

The World Health Organization estimates that more than forty-million people have the disease. More than ninety-five percent of these people live in poor and developing countries.

Soil conservation efforts protect soil from wind and water that can blow or wash it away. Good soil produces food crops for both people and animals.