Approximately 5 minutes following ascent from the water, a 30-year-old male diver complains of sharp chest pain and mild dyspnea. By the time you arrive at the scene, the patient is unresponsive. You should be MOST suspicious for:
A) nitrogen narcosis.
B) a tension pneumothorax.
C) decompression sickness.
D) an arterial gas embolism.
Ans: D) an arterial gas embolism.
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The part of the world that has been warming fastest in the last 50 years is ____.
A. the mid-latitudes B. the Arctic region C. North America D. the Tibetan Plateau E. the oceans throughout the world
Which is a natural service provided by mountains to support agricultural activities?
A. clean water B. clean air C. biodiversity D. food
The genes of an organism make up its ________, and the traits of an organism make up its ________
A) phenotype; chromosomes B) enzymes; genotype C) genotype; phenotype D) phenotype; genotype
Compared to high-income nations, middle-income, moderately developed nations have collectively
A) a larger population and lower total fertility rate. B) a larger population and total fertility rate. C) a smaller population and total fertility rate. D) a smaller population and higher total fertility rate.