Concept: The disappearance of forest or deforestation refers to the action of transforming wide areas of trees into cleared land. Natural causes such as fires, floods and human activities such as mining, dam construction are the causes of deforestation. Explanation: Digging of mines: It refers to the digging of the earth to extract minerals having commercial importance in the market. Many minerals are found in forests or tropics hence it leads to deforestation. Construction of dams: It refers to constructing barriers to restrict the natural flow of water to convert its mechanical energy into stored potential energy. Dam projects generally require a huge area of forest land hence it leads to deforestation. ​Important Points The remaining activities are not responsible for the disappearance of forests as they don't require the removal of trees from the land, these activities are done without damaging the natural environment. Thus, A. Digging of mines: responsible for the disappearance of forests. B. Constructing dams: responsible for the disappearance of forests. C. Collection of leaves and herbs to sell them in the market: not responsible for the disappearance of forests. D. Weaving baskets from bamboo: not responsible for the disappearance of forests. E. Making leaf plates out of fallen leaves: not responsible for the disappearance of forests.