The main material used to produce cement and concrete is:
A) salt
B) phosphate
C) limestone
D) iron ore
E) well-cemented quartz sandstone
Correct Answer:
Verified
Q72: What are the main features of the
Q73: How do many copper deposits form?
A) near
Q74: What are the main types of geologic
Q75: How do iron-ore deposits form?
A) as iron-rich
Q76: Large copper deposits, called porphyry copper deposits,
Q78: Which of the following is an environmental
Q79: Which of the following would NOT be
Q80: Why would deposits of iron ore form
Q81: Which of the following does NOT seem
Q82: From the answers provided, choose the type
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