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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
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Geography, 23.06.2019 17:30
Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things
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Geography, 24.06.2019 05:00
C. how would an erratic boulder provide evidence of the flood? type your response here: i
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Why are the north and sole poles the coldest places on earth...
English, 11.11.2020 17:50
English, 11.11.2020 17:50