The heavier silicates named 'Sima' or silica + magnesium are most abun

1.	The heavier silicates named 'Sima' or silica + magnesium are most abundant in the ________
A.	Crust
B.	Core
C.	Mantle
D.	Ocean floors
Answer» B. Core

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The heavier silicates named 'Sima' or silica + magnesium are most abundant in the ________

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