You are asked to pick a rock to make your great Aunt Petunia's headstone. You have been asked to pick the most durable headstone available and cost is no issue. What rock would most likely make the most durable and chemically resistant headstone in a humid environment?
A. a granite with a very high percentage of quartz and no fractures
B. a limestone with many cracks filled with calcite
C. a shale cemented with calcite and iron
D. a marble with fine crystals of calcite
E. a quartz sandstone cemented with calcite
Answer: A
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A) Roman Catholics from Latin America. B) Roman Catholics from the northeastern United States. C) Roman Catholics from Ireland. D) Protestants to the north. E) Protestants to the east.
Grains, feed and food products have become and increasing share of world trade
Indicate whether the statement is true or false
The heat that transformed Earth early in its history came primarily from all but which of the following?
A. the decay of radioactive elements B. impact energy C. dark energy D. gravitational energy
Mica and clay minerals have a platy crystal form because they have a sheet-like structure of silica tetrahedra
Indicate whether the statement is true or false