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Geography, 30.04.2021 23:50 eweqwoewoji
.. truth and dare ... zo0m
.
id: 617 899 4543
passw: iwannajoin​
Answers: 2
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
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What tests were able to determine when continental crust was formed?
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Geography, 24.06.2019 14:30
Which of the following are commonly shown as a topographic map
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