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Science Reference Center
Full-text articles to support research in applied sciences, biology, chemistry, earth and space science, and energy. Includes the Science Image Collection, a database of high-quality science images from National Geographic, UPI, Getty, NASA, and Nature Picture Library.
1) Copper
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Copper is one of the most plentiful and useful metals on Earth. Ancient warriors used it to forge weapons with deadly blades, and shipbuilders used it to cover the bottoms of boats. Today, you can find copper in the kitchen and in computers, too. Copper is mixed with other metals to create alloys like brass to make instruments such as the trumpet. It is even in our blood! The countries of North America have always had plentiful natural resources....
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As two of the rarest metals on Earth, gold and silver have amazed humans for centuries. People have searched the world for silver and gold, hoping to fill their pockets with the shiny metals. And yet during all of human history, only enough gold has been extracted to fill two Olympic-sized swimming pools. And not every aspect of the metals is pretty. Mining gold and silver comes with many environmental consequences. The countries of North America...
3) Iron
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If you put metals in a competition of strength, iron would come out on top. It works hard for us in the form of bridges, skyscrapers, and fences. Combine iron with carbon and you have steel, which can be used in creating buildings, tools, and even satellites. Some of the first iron on Earth even came from outer space on meteorites. Iron is definitely out of this world! The countries of North America have always had plentiful natural resources. But...
4) Uranium
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Uranium is a powerful resource, but it is also a mixed blessing. Uranium can light a town or power a submarine, but it can also destroy a city. Areas around a nuclear power plant, which uses uranium to create its energy, can become dead zones if the nuclear reaction becomes unstable. And yet nuclear power can also be one of the cleanest sources of energy. The countries of North America have always had plentiful natural resources. But the exploitation...
6) Salt
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Looks at salt in the countries of North America, examining its natural history, use, technology, environmental impact, and economic significance. --Publisher's descrption.
8) Wild weather
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"Weather happens every day. Sometimes it is wild. Hurricanes, tsunamis, and tornadoes are just some of the wild weather events in the world that have taken many lives and destroyed cities. Engage your most struggling readers in grades 4-7 with Red Rhino Nonfiction! This new series features high-interest topics in every content area. Visually appealing full-color photographs and illustrations, fun facts, and short chapters keep emerging readers focused....
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