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Geography, 22.06.2019 14:40
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
Answers: 2
Geography, 23.06.2019 21:00
The magnitude of an earthquake is typically calculated according to the scale. a. mercalli b. fujita c. richter d. saffir-simpson
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A collectíve term for people ín a church...
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