A self-amplifying reaction and a nuclear explosion in a nuclear power plant are prevented in large part by
A) the regular addition of uranium-239 to the fuel.
B) control rods that absorb extra neutrons.
C) the production of plutonium-239.
D) fuel rods that absorb tremendous amounts of heat.
B
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If you went out for dinner once a week and always ordered an 8-ounce (227 gram) Tuna steak, which of the following statements about your fish consumption is correct?
A) You eat about the same amount of fish as an average Japanese. B) You eat less fish than an average Japanese but more than an average Swede. C) You eat about the same amount of fish as an average Swede. D) You eat less fish than an average Swede but more than an average American. E) You eat about the same amount of fish as an average American.
Gasification and liquefaction techniques
A. refine petroleum to gasoline. B. transform natural gas to liquid gasoline. C. clean sulfur from petroleum. D. convert coal to more versatile fuel.
The North American Plate is all on one plate.
Answer the following statement true (T) or false (F)
A common inhabitant of the supratidal zone on the rocky shores of the Pacific Northwest is the ________
A) gooseneck barnacle B) mussel C) kelp D) periwinkle snail E) sea urchin