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Geography, 22.06.2019 14:40, thezbell
Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite
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Geography, 23.06.2019 21:20, HolaConcheeDaBrycee
Hey! can anyone me out with my homework? it will be very much appreciated! and !
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Geography, 24.06.2019 06:00, nuconteaza119
True or false. epeirogenic changes deform the crust.
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How non renewable cause changes in the supply and demand in different countries...
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