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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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MrDereche MrDereche
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9 years ago
Why do magmas rise toward Earth's surface?
A) Magmas are more viscous than solid rocks in the crust and upper mantle.
B) Most magmas are richer in silica than most crustal and upper mantle rocks.
C) Magmas are mainly liquid and contain dissolved fluids such as water; most are less dense than the adjacent solid rock.
D) all of the above
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milestone23milestone23
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9 years ago
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