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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 02:00
What weather system might be occurring if the pressure gradient decreases and fish harvests in peru are weaker than normal
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Israel has a president and a prime minister. the legislature in israel is called the knesset. how ar...
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