What is one of the principal drawbacks of oil shale as an alternative energy source?
A. It cannot be processed in situ.
B. In situ methods cause major disturbance of the land.
C. It expands upon heating, creating a waste disposal problem.
D. No oil shale reserves are found in the U.S..
Answer: C
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What happens to the abundance of the parent isotope over time?
A. It stays the same. B. It decreases. C. It increases.
Which of these numbered features is an atoll?
A. 1 B. 2 C. 3 D. All of these choices are correct. E. None of these choices are correct.
What are some of the preferences that Congress established to select the immigrants that would fulfill the established quota?
A) diversity, clean criminal records, ability to receive remittances B) skilled workers, number of children, religious background C) family reunification, skilled workers, diversity D) family reunification, economic means, passing medical exams E) the Quota Act of 1921.
Why does the rainshadow desert form on the downwind side of the mountains?
A) The air mass has absorbed all the moisture on that side as it descended. B) The mountains block wind from that region, making it hot. C) The sediments on the downwind side are porous. D) The moisture was precipitated from the air mass on the upwind side.