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If volcanoes get their magma from the crust below them, what can you say about the silica content of earths crust under the ocean
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If volcanoes get their magma from the crust below them, what can you say about the silica content of earths crust under the ocean

User Evey
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Im pretty sure that it is...It is low in silica.





Hope this helps.....








User Osborne
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