Geology
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GEOLOGY: In the 5th century B.C., Empedocles argued that everything that exists can be reduced to these 4 elements
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R
T
H
,
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R
,
W
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T
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R
&
F
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R
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Clue
CALCITE, GYPSUM OR TALC
THE BADLANDS
A RIFT VALLEY
EARTH, AIR, WATER & FIRE
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