Dark Silicates have a specific gravity of 3.2 to 3.6 and are composed primarily of silica tetrahedral and ________

A) aluminum and magnesium
B) aluminum and sodium
C) potassium and iron
D) iron and magnesium
E) potassium and calcium


D

Environmental & Atmospheric Sciences

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Compaction at landfills is the only proven way to significantly reduce the volume of municipal solid

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A water wave reaches an unstable breaking point when the steepness ratio, H/L, reaches ________.

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