Trees are an important natural resource, because there is a constant demand for timber for building, for paper and other purposes. In developing countries wood is used as fuel for cooking. Even waste wood can be chipped and mixed with an adhesive under high pressure to form large flat building boards.
Tree felling in some areas has resulted in large-scale deforestation, often followed by erosion. With no tree roots to stabilize it, the soil is washed away by rainfall.
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