Which is used to estimate how much oil in the ground can be extracted at a profit?
A. proven oil reserves
B. speculation
C. unproven oil reserves
D. oil banks
Answer: A
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Today, the less-developed countries have ________.
A. high death rates and low birthrates B. high death rates and high birthrates C. low death rates and high birthrates D. low death rates and low birthrates
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A) Flood basalts B) Granite C) Anorthosite D) Frozen hydrogen