The most useful method for dating the oldest events on Earth is ____
A)tree ring records
B)radiometric dating of rocks and fossils
C)oxygen isotope ratios from ice cores
D)plankton and isotopes in ocean sediments
E)glacial evidence
B
Environmental & Atmospheric Sciences
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What will be an ideal response?
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Why are ores so valuable?
A. They are sources of naturally occurring gold. B. They hold many clues to Earth's natural history. C. Metals can be efficiently extracted from them. D. They tend to occur in scenic mountainous regions.
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Over half of the Earth's solid surface is at least 3,000 meters below sea level
Indicate whether the statement is true or false
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At which points on this graph is the magma under the highest amount of pressure and highest temperature?
A. 1 B. 2 C. 3 D. 4
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