Quiz 3 - Lessons 5&6.docx
Which of the following mining processes removes the top layers of soil, rock, and vegetation to access minerals? A. Acid mine drainage B. Subsurface mining C. Smelting D. Surface mining Answer Key: D Feedback: Surface mining removes surface vegetation, rocks, and soil to create an open pit for mining. Subsurface mining uses vertical or sloping shafts to access minerals deep underground. Smelting melts ore to separate valuable minerals from impurities. Acid mine drainage occurs when acidic pollution from mining drains into nearby water sources. Source: Lesson 5, Classroom Question 2 of 10 10.0/ 10.0 Points Which of the following soil conservation issues occurs due to improper irrigation increasing the soil’s salinity
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- American Military University
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- SCIN 140 Introduction To Environmental Science With Lab
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scin 140