Which of the following methods of extraction is the most damaging to the environment? . a. surface mining. b. subsurface mining. c. placer mining. d. none of the above

The following method of extraction is the most damaging to the environment surface mining. Correct A Surface mining includes the removal of the overburden to get at material, such as coal, below the surface of the land with the help of machines. This can lead to erosion in the environment, formation of sinkholes, loss of biodiversity, and contamination  by chemicals.

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