Which are the two most abundant elements of the Earth's continental crust?
A) iron and aluminum
B) oxygen and aluminum
C) silicon and aluminum
D) oxygen and silicon
E) iron and oxygen
Correct Answer:
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A) carbohydrate
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A)
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Q59: Which of the following gives the correct
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Q62: The common mineral silicate is composed of:
A)
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Q65: The specific gravity of a mineral is:
A)
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