Geography, 20.12.2019 08:31, rattler6125
Arock formed with 1,000 atoms of a radioactive parent element, but only contains 125 radioactive parent atoms today. if the half life is 1,000,000 years, how old is the rock?
Answers: 3
Geography, 24.06.2019 11:20, briannianoel876
What ocean lies to the north of both asia and north america
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Arock formed with 1,000 atoms of a radioactive parent element, but only contains 125 radioactive par...
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