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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

Please select the best answer from the choices provided.

Answer :

Final answer:

Surface mining is regarded as the most damaging mining method due to its extensive landscape alteration and habitat destruction. It involves removing large areas of soil and rock to extract minerals, negatively affecting ecosystems and water sources. Other methods like subsurface and placer mining can also harm the environment, but to a lesser extent.


Explanation:

Environmental Impact of Mining

Among the various methods of extraction, surface mining is often considered the most damaging to the environment. This method involves removing soil and rock layers to access minerals located near the surface, which can lead to significant landscape alteration and habitat destruction.

Types of Mining Methods

  1. Surface Mining: This includes open-pit mining and mountaintop removal, where large areas of land are devastated, impacting ecosystems and water sources.
  2. Subsurface Mining: While it has a smaller surface footprint, it can still cause subsidence and pollution due to the release of toxic materials.
  3. Placer Mining: This method can also have detrimental effects, particularly on river ecosystems, but is generally less disruptive than surface mining.

In conclusion, when considering the ecological consequences, surface mining stands out as the most harmful method due to its extensive impact on the environment.


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