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In an unweathered sample of igneous rock,the ratio of an unstable isotope to its stable daughter isotope is 1:15.If no daughters were present at the time the rock cooled below closure temperature,and the half-life of the isotope is 50 million years,how old is the rock?
Growing Population
An increase in the number of individuals in a population, typically due to birth rates exceeding death rates.
American Federation
A large, national labor union organization in the United States.
Industrial Organizations
A field of economics dealing with the strategic behaviors of firms, market competition, antitrust laws, and the regulation of industries to promote competition and economic efficiency.
Union Members
Individuals who belong to a labor union, which is an organization that represents workers in negotiations with employers regarding wages, work conditions, and other employment-related issues.
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