Spreading centers are an ideal location for volcanism because ________.
A. the oceanic plates pull apart causing hot asthenosphere rock to rise and undergo decompression melting to form magma that continues to rise
B. they sit above the high-temperature asthenosphere
C. the asthenosphere rock has low percentages of SiO2
D. All of these choices are correct.
Answer: D
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What will be an ideal response?
The most fundamental structural and functional units of life are ____.
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