Nuclear power plants are especially expensive because they
A) require the highest levels of security.
B) usually cost as much to decommission as they cost to build.
C) have so many parts that must be coated in gold.
D) are constructed of many thick layers of concrete.
B
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The energy in the sunlight striking the earth for just 1 hour is enough to run the world's economy for
a. one hour b. one day c. one week d. one month e. one year
Major Atlantic hurricanes typically
A) are unaffected by midlatitude westerly winds. B) are affected by midlatitude westerly winds early in their lifetime. C) are affected by midlatitude westerly winds late in their lifetime. D) are affected by midlatitude westerly winds both early and late in their lifetime.
Which of the following amino acids will exist as a -2 ion at very high pH?
A) arginine B) glutamic acid C) isoleucine D) none of these
Scientists have proposed that which of the following deep ocean processes may hold part of the answer to the question of whether life on Earth emerged from the deep sea?
A) Acidification B) Oxidation C) Photosynthesis D) Sedimentation E) Serpentinization