The ________ is solid and very iron rich
A) crust (continental)
B) crust (oceanic)
C) mantle
D) core (outer)
E) core (inner)
Answer: E
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Currently, the fastest?growing source of electricity generation using new renewable sources is ________
A) PV solar B) hydro C) wind D) natural gas E) coal
The crust and the underlying uppermost mantle make up the ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following methods are used to measure ocean surface currents indirectly?
A) Accidental spills from container ships B) Doppler flow meters C) Free-drifting Argo floats D) Propeller flow meters E) Radio-transmitting float bottles
Which of the following statements is false?
a. About 1.2 million people are killed worldwide annually in motor vehicle accidents. b. Motor vehicles are the largest source of air pollution. c. More Americans have been killed by automobiles than on battlefields in all U.S. wars. d. In the United States, more than 40,000 people die annually in motor vehicle accidents. e. Motor vehicles are second only to industry as a source of air pollution in the U.S.