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How is acid mine drainage produced?

A. Water seeps into subsurface mine tunnels, and hazardous chemicals leach out of rocks into the water.

B. Coal companies often spill chemicals around the mine, and they drain into surface lakes.

C. Overburden is dumped into rivers below the mining site and contaminates the waters.

D. The coal mining releases toxic chemicals into underground streams.

Answer :

The correct option is: Water seeps into subsurface mine tunnels and hazardous chemicals leach out of rocks into the water

Acid mine drainage is produced by the seeping of water into subsurface mine tunnels and the hazardous chemicals leaching out of rocks into the water. .What is acid mine drainage?Acid mine drainage is a kind of pollution that arises from the release of acidic water from mining sites.

This happens when sulfide minerals are exposed to air and water, producing sulfuric acid. The polluted water, often toxic, leaks into nearby water bodies, destroying aquatic life, and polluting drinking water. Acid mine drainage also leads to soil erosion and flooding.

The phenomenon of acid mine drainage is quite prevalent in mining regions, where companies extract coal, iron, zinc, and other metals. Acid mine drainage is a significant environmental issue that needs to be addressed with a comprehensive approach to control, prevent, and treat the polluted water.

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