Which of the following would cause a negative forcing?
A) An increase in the burning of fossil fuels, leading to an increase in greenhouse gases in the atmosphere
B) A large volcanic eruption spewing ash high into the atmosphere, blocking sunlight around the world for years until the ash cloud slowly dissipates
C) Snow-covered ice sheets in Greenland melting and revealing bare rock
D) All of these scenarios would cause a negative forcing.
B
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According to the temperature sounding shown in this thermodynamic diagram, [INSERT FIGURE 3-31. NO CAPTION]
A) the tropopause occurs at a pressure of about 550 mb B) the tropopause occurs at a pressure of about 140 mb C) the stratopause occurs at a pressure of about 550 mb D) the stratopause occurs at a pressure of about 140 mb
The U.S. center of population has moved steadily to the
A) east. B) north. C) south. D) west. E) center.
The dry adiabatic rate is ____ greater than the moist adiabatic rate
a. never b. sometimes c. always d. most of the time e. half the time
Indian reservations are among the poorest communities in the U.S
a. True b. False Indicate whether the statement is true or false