Living In The Environment
18th Edition
ISBN: 9781285969725
Author: G. Tyler Miller, Scott Spoolman
Publisher: Cengage Learning
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Question
Chapter 14, Problem 1CR
To determine
The importance of the rare-earth metals.
Expert Solution & Answer
Answer to Problem 1CR
Rare-earth metals have a significant role in major technologies that support today’s lifestyles and economies. They are used in LCD flat screens, LED bulbs, batteries, atomic bombs, and so on.
Explanation of Solution
Rare-earth metals are used in computers and television sets to manufacture liquid crystal display flat screens, energy-efficient compact fluorescent and LED lightbulbs, solar cells, fiber-optic cables, cell phones, and digital cameras. They are also used in the making of batteries and motors for electric and hybrid-electric cars, catalytic converters in car exhaust systems, jet engines, and the powerful magnets in wind turbine generators. In addition, they are used in missile guidance systems, smart bombs, aircraft electronics, and satellites.
It is not possible to develop the current versions of cleaner energy technology and other high-tech products that will be major sources of economic growth and profits during this century without affordable supplies of these metals. It is essential that these metals are needed to maintain the military strength of nations.
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▲ Figure 9.7 This diagram showing common depositional landforms depicts a hypothetical area affected by ice
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7. The streamlined, asymmetrical hills composed of till, labeled B, are what type of feature?
8. Examine the shape of the features labeled B on the map in Figure 9.10. How can these features be used to determine the direction of ice flow in a glaciated area?
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