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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:
A
B

Answer :

Final answer:

Among the mining methods listed, surface mining is considered the most damaging to the environment due to its extensive habitat destruction and soil erosion. Subsurface mining and placer mining have lesser impacts, making them comparatively more environmentally friendly. Sustainable practices are crucial in mitigating these effects.


Explanation:

Methods of Extraction and Environmental Impact

When considering the environmental impact of mining methods, the most damaging approach is surface mining. This technique involves removing large amounts of soil and rock to access minerals close to the surface, which can lead to significant habitat destruction, soil erosion, and water contamination. In contrast, subsurface mining has a lesser impact on surface ecosystems, though it is not without its own environmental concerns, such as groundwater contamination and the risk of subsidence.

Placer mining, while disruptive, typically affects a smaller area and involves sifting through sediment in riverbeds, which minimizes damage to large swaths of land. Therefore, in terms of overall environmental damage, surface mining can be considered the most harmful among the options provided.

Conclusion

Understanding the impact of these extraction methods highlights the need for sustainable practices in resource extraction and management.


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