Pulmonary overpressurization syndrome occurs when a diver:
A) holds his or her breath during ascent.
B) exhales constantly as he or she ascends.
C) panics and hyperventilates during descent.
D) experiences a pneumothorax under water.
Answer: A) holds his or her breath during ascent.
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The USGS evaluated the age of different parts of the Slumgullion feature by
A) measuring the size of trees incorporated into the material. B) measuring the temperature of rocks soon after the feature had moved. C) examining the development of soil. D) measuring the content of moisture during different seasons. E) None of these are correct.
A serious gender imbalance, indicated by millions of "surplus" males, will affect _____ in the next 25 years.
A. Japan B. Mongolia C. China D. South Korea
Which technique is an example of a low-tech method that may be used to conserve water in developing countries?
A. drip irrigation B. planting deep-rooted perennial crop varieties C. low-energy, precision application sprinkler D. center-pivot sprinkler E. flood irrigation
The plague was transmitted to humans from mosquitoes.
Answer the following statement true (T) or false (F)