Concrete is a mixture of cement along with
A) water.
B) gravel.
C) sand and gravel.
D) sand, gravel, and water.
Correct Answer:
Verified
Q2: The inorganic portion of the lithosphere is
Q3: Limestone is consists of
A)Al₂O₃.
B)CaCO₃.
C)Fe₂O₃.
D)PbS.
Q4: Which of the following are part of
Q5: Calcium carbonate is NOT found in
A)seashells.
B)chalcopyrite.
C)pearls.
D)stalactites.
Q6: Which of the following technological advances was
Q8: Pure quartz is composed of
A)silicon and oxygen.
B)silicon,
Q9: All of the following combinations of elements
Q10: Silicates are compounds composed of
A)silicon only.
B)silicon and
Q11: Which of the following is NOT a
Q12: In terms of composition,nine elements compose approximately
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