As compared to ultramafic rocks,mafic rocks have a ________.
A)greater proportion of silica
B)lesser proportion of silica
C)greater proportion of iron and magnesium atoms
D)greater density

Name: As compared to ultramafic rocks,mafic rocks have a ________. A)greater proportion of silica B)lesser proportion of silica C)greater proportion of iron and magnesium atoms D)greater density
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Mafic rocks have a greater proportion of silica compared to ultramafic rocks, which are richer in iron and magnesium.

As Compared to Ultramafic Rocks,mafic Rocks Have a ________