At the current rate of consumption, the stock of ________ available for mining to be used as a fuel source in nuclear power plants is expected to last about 200 years
Fill in the blank(s) with the appropriate word(s).
uranium
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Black coffee is best classified as
A. a suspension B. a heterogeneous mixture C. a solution D. an element E. a compound
Receptors for the general senses are found
What will be an ideal response?
With respect to channelization, straightening the channel ________.
A. increases the gradient of the stream bottom, making the water flow faster B. decreases the gradient of the stream bottom, making the water flow slower C. decreases the gradient of the stream bottom, making the water flow faster D. increases the gradient of the stream bottom, making the water flow slower E. None of these choices are correct.
The current practice of geothermal power generation may not always provide a practical renewable energy source because ________
A) power plants have high maintenance costs B) in many cases, the magma is used faster than it is recharged C) in some cases, the heated groundwater is used much faster than it is recharged D) in some instances, pollution emissions can be very high E) geologically heated groundwater is unsuitable for these plants and must be purified first