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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Which is a natural service provided by mountains to support agricultural activities?
A. clean water B. clean air C. biodiversity D. food
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
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.