The National Geographic Magazine, Volume 202National Geographic Society., 2002 - Geography |
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Page 9
reactors ? With 91 million gallons of high - level waste left over from plutonium processing , scores of tons of plutonium , more than half a million tons of depleted uranium , millions of cubic feet of contaminated tools , metal scraps ...
reactors ? With 91 million gallons of high - level waste left over from plutonium processing , scores of tons of plutonium , more than half a million tons of depleted uranium , millions of cubic feet of contaminated tools , metal scraps ...
Page 14
... million years . HIGH - LEVEL WASTE The most dangerously radioactive waste comes from two chief sources : Spent fuel from nuclear reactors ( 52,000 tons ) and liquid and solid waste from plutonium production ( 91 million gallons ) ...
... million years . HIGH - LEVEL WASTE The most dangerously radioactive waste comes from two chief sources : Spent fuel from nuclear reactors ( 52,000 tons ) and liquid and solid waste from plutonium production ( 91 million gallons ) ...
Page 104
... million years ago , during the Cretaceous period . That's relatively recent in geologic time : Petal Sepal What defines a flowering plant ? Stamen Carpel ( below ) -Stigma -Style Ovary Ovule If all Earth's history were compressed into ...
... million years ago , during the Cretaceous period . That's relatively recent in geologic time : Petal Sepal What defines a flowering plant ? Stamen Carpel ( below ) -Stigma -Style Ovary Ovule If all Earth's history were compressed into ...
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