Anthracite coal ____.
A) has up to 75% carbon
B) is actually a metamorphic type rock
C) is the most abundant form of coal
D) is dull-black
E) contains high amounts of volatile elements
Correct Answer:
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Q31: Fossils are common because _.
A)bones are so
Q32: Wave-formed ripple marks _.
A)tend to have symmetrical
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A)organisms are important
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A)are folded and faulted after
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A)sea level falls
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A)erosion degrades a
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