Once oil and gas are formed, they
A. flow most easily through permeable rocks, such as sandstone.
B. rise toward the surface.
C. are lighter than water.
D. can be prevented from reaching the surface if they are trapped by impermeable layers.
E. All of these choices are correct.
Answer: E
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What is a factor that is instrumental in shaping an erosional coast?
A) Wind-driven grit abrasion B) Stream erosion C) Dissolution of acids and bases D) All of these choices
A satellite image of the United States was taken at “0900Z.” What was the local standard time in Chicago (90° W)?
What will be an ideal response?
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A) should rise B) should fall C) should stay the same