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Solidified fragments of volcanic material ejected into the air are called
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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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You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.
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Geography, 24.06.2019 16:00
Adepression on the surface of the land caused by the collapse of a cave roof is a blank. a) valley b) sinkhole c) mound
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Solidified fragments of volcanic material ejected into the air are called...
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