What causes a blowout?
A. Oil platforms are destroyed by hurricanes
B. A high pressure zone is encountered while drilling
C. Oil platforms are hit by tankers
D. Too much gas is produced during refining
Answer: B
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"This rock is 15 million years old" is an example of ________
A) a numerical date B) a relative date C) superposition D) the principle of cross-cutting relationships
What event effectively ended Native American resistance to Euro-American settlement in the Great Plains?
A) The defeat of General Custer at Little Big Horn forced the US government to negotiate. B) The US Homestead Act was passed to allow for settlement only on previously unclaimed lands. C) The massacre of more than 200 Dakota men, women, and children near Wounded Knee D) Prospectors in the area brought diseases that largely wiped out the Native American presence in the area.
What was the colony of Portugal in the New World?
A) Argentina B) Peru C) Brazil D) Uruguay E) Paraguay
Which of the following properties makes plastic an increasingly abundant component of oceanic flotsam and very damaging to the marine environment?
A) They are dense, so they sink and concentrate at the sea floor. B) They are durable causing them to last almost indefinitely. C) They are expensive and used sparingly. D) They are weak, so entangled marine organisms can break free. E) They cannot be recycled so they must be disposed after use.