Man cannot exist without air, water and light. Many people think that soil is also necessary to man’s existence. Without soil there could be no vegetation, no animals and consequently no people. However, the soil is being eroded day after day because people use the land without paying attention to the protection of land and the prevention of soil erosion. In many rural areas, soil erosion is a major problem which endangers the development of agriculture. đặt câu hỏi: what/man/exist/without why/soil/eroded/day/day

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