AMU SCIN 140 Quiz 3 - Lessons 5&6 Answered 2021 Return to Assessment List Part 1 of 1 - 80.0/ 100.0 Points Question 1 of 10 10.0 / 10.0 Points Which of the following mining processes removes the top layers of soil, rock, and vegetation to access minerals? • A. Acid mine drainage • B. Subsurface...
Question 1 of 10
10.0/ 10.0 Points
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?
A. Contour plowing
B. Desertification
This study source was downloaded by 100000862232355 from CourseHero.com on 03-08-2023 00:52:12 GMT -06:00
Answer Key: C
Feedback: Soil salinization occurs when repeated irrigation and poor drainage increase the
salinity of the soil. Soil erosion occurs when wind or rain remove soil from the land.
Desertification occurs when wind and drought cause ecosystems to become barren deserts.
Contour plowing helps conserve soil by plowing along the natural contours of the land. Source:
Lesson 5, Classroom
Question 3 of 10
10.0/ 10.0 Points
Which of the following federal organizations oversees national parks?
A. National Park Service
B. Bureau of Land Management
C. U.S. Forest Service
D. Fish and Wildlife Service
Answer Key: A
Feedback: The National Park Service manages national parks and areas of biological, cultural,
and historical significance. The Bureau of Land Management primarily manages federal lands
for natural resources. The Fish and Wildlife Service primarily manages federal lands for wildlife
refuges. The U.S. Forest Service manages national forests. Source: Lesson 5, Classroom
Question 4 of 10
This study source was downloaded by 100000862232355 from CourseHero.com on 03-08-2023 00:52:12 GMT -06:00
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