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Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to determine their age. This method is known as radiometric dating.
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Intangible assets, Copyrights , trademarks , patents
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Theodore Roosevelt's Corollary to the Monroe Doctrine (1905)
The corollary stated that not only were the nations of the Western Hemisphere not open to colonization by European powers, but that the United States had the responsibility to preserve order and protect life and property in those countries.
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burnside was removed and replaced by Mcclellan
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