Armentrout, David, and Patricia Armentrout. "Let's Explore Science: Solar 
     Energy." Let's Explore Science: Solar Energy. Jan. 2009: n.pag. SIRS 
     Discoverer. Web. 16 Sep. 2015. Look for advantages/disadvantages 
     section 
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Brain, Marshall. "How Stuff Works: How Concentrating Solar Collectors Work." 
     How Stuff Works. 08 Apr. 2008: n.p. SIRS Discoverer.Web. 16 Sep. 2015. 
     Middle level source 
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Brain, Marshall. "How Stuff Works: How a Solar Roof Works." How Stuff Works. 02 
     Jun. 2009: n.p. SIRS Discoverer. Web. 16 Sep. 2015. Good explanation 
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Crane, Cody. "Bright Future." Science World 70.11 (2014): 8. Middle Search Plus. 
     Web. 16 Sept. 2015. Middle-level overview. 
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Linde, Barbara M. "Alternative Energy." Salem Press Primary Encyclopedia (2015): 
     Topic Overviews K-5. Web. 16 Sept. 2015. Great diagram in this 
     encyclopedia article 
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Mihaly, Christy. "Harnessing the Desert Sun." Appleseeds. Jul/Aug 2014: 10-11. 
     SIRS Discoverer. Web. 16 Sep. 2015. Overview article 
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"Natural resource." Britannica School. Encyclopædia Britannica, Inc., 2015. Web. 
     16 Sep. 2015. <http://school.eb.com/levels/elementary/article/ 
     399553#252017>. Define renewable vs. nonrenewable 
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"Our Shining Sun." Scholastic News -- Edition 1 70.8 (2014): 2. Primary Search. 
     Web. 16 Sept. 2015. Short overview article 
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Ramaley, Shirley Anne. "Energy From The Sun…Solar Power." Boys' Quest 18.2 
     (2012): 14. Middle Search Plus. Web. 16 Sept. 2015. Overview Article 
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"Solar Energy Video Collection." Discovery Education. N.p., n.d. Web. 15 Sept. 
     2015. <https://google.discoveryeducation.com/player/view/assetGuid/ 
     54CE3702-9DC1-982D-C228-6714029656A2>. 
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