What was the source of the CO2 that suffocated 1700 people in Cameroon, West Africa, in 1986? What will be an ideal response?
The CO2 originated from Lake Nyos, where the deeper levels of the lake were highly charged with
CO2. This gas was kept in solution by the pressure of the overlying water. Something, as yet unknown,
disturbed the water column, so the CO2-charged water was shifted nearer to the surface. The resulting
reduction of confining pressure permitted the gas to spontaneously come out of solution as bubbles, in
much the same way that bubbles occur in a carbonated soft drink when it is first opened.
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The tropopause altitude is highest ________ because of the ________
A) during both the spring and autumn; equal day lengths around the globe B) during the summer; increased atmospheric pressure C) during the winter; Sun's direct rays hitting the Tropic of Capricorn D) at the equator; intense heating from the surface E) at the poles; diffuse solar radiation
Imagine that you wished to manufacture clothing in the United States to sell in Asian markets. What challenges would you have to overcome in order to do this, and how?
What will be an ideal response?
The term nimbus, when used in describing clouds, refers to ____
a. precipitation b. ice crystals c. highest d. lightning and thunder
Other than personal safety, your MOST immediate concern when caring for a submersion victim should be:
A) the risk of vomiting and aspiration. B) determining what caused the event. C) inserting an advanced airway device. D) hypothermia-induced dysrhythmias.