The dust storm in Arizona in 2014
A) originated in Mexico and moved north into Arizona.
B) occurred during a period of unusually heavy rainfall.
C) was the result of loss of soil microorganisms.
D) was triggered by drought conditions similar to those of the 1930s Dust Bowl.
D
You might also like to view...
What is the zone on a glacier where the amount of ice added is less than what is lost?
A. accumulation zone B. firn C. ablation zone D. kettle E. melting zone
North America is farthest from the sun during
A. perihelion, which occurs in early July. B. perihelion, which occurs in early January. C. aphelion, which occurs in early January. D. aphelion, which occurs in early July.
The East African rift is a divergent plate boundary that is splitting the continent of Africa into two pieces. What will eventually form around this divergent boundary?
a) a continent b) a convergent boundary c) a transform boundary d) an ocean e) a hurricane
New renewables include ________
A) sustainably harvested fuelwood B) ethanol C) biodiesel D) wind power E) "biogas" methane