According to the EPA, how many large coal power plants could be closed if all U.S. households replaced their existing refrigerators with efficient frost-free refrigerators now available?
A. 18
B. all
C. 98
D. 0
Answer: A
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Which of the following air masses shows the most dramatic change in both temperature and moisture content as it moves over a large body of very warm water?
A. mP in winter B. cT in summer C. cP in winter D. mT in summer
Define the term "balkanization."
What will be an ideal response?
What are the six common nonsilicate mineral groups?
a. oxides, feldspars, carbonates, halides, sulfides, sulfates b. feldspars, micas, pyroxenes, amphiboles, olivines, clays c. oxides, native elements, carbonates, halides, sulfides, pyroxenes d. oxides, native elements, carbonates, micas, sulfides, sulfates e. oxides, native elements, carbonates, halides, sulfides, sulfates
An echo sounder operates by measuring the time required for a ________
A) sound pulse travels from a ship to the seafloor and back B) radar beam to travel from a harbor patrol boat to a fuzz-buster on a speeding yacht C) light beam to travel from a satellite at a known altitude to the sea bottom and back D) radar beam to travel from a ship to the seafloor and back