Why is ice effective at cooling drinks?
A) The sensible heat loss of water
B) The heat capacity of water
C) The latent heat of fusion
D) The diffusion of heat energy
C
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There is an urgent need to improve the recycling strategy for e-wastes because
A) there is no profit to be made from the materials. B) they contain toxic but valuable materials, and U.S. recyclers tend to outsource to China. C) it has been easier and safer to dispose of e-wastes in landfills. D) e-wastes contain large amounts of radioactive materials.
Although we don't know for sure, changes in the strength and orientation of earth's magnetic field are most likely due to
A) fluctuations in outer-core convection. B) variations in sea-floor spreading rates. C) the total number of mantle hot spots. D) changes in the velocity of subducting plates.
When states attempt to reclaim lost territory or peoples is called balkanization
Indicate whether the statement is true or false
The first scientific voyage to use an echo sounder on a large scale was the ________.
A. Meteor expedition B. Discovery expedition C. Endeavor expedition D. Fram expedition E. Beagle expedition