In 2008, Saudi Arabia announced that it will stop producing wheat by 2016 and will from that point on import wheat to feed its 29 million people. This decision has been made because
a. its major deep aquifer has been depleted by drawing water for irrigation
b. multiple years of severe droughts have depleted the water table
c. this very rich, oil-financed economy can easily import food rather than grow its own
d. desalinization of sea water around Saudi Arabia has contaminated local freshwater reserves
e. oil seepage from oil fields has contaminated local freshwater reserves
A
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Which of the following statements describes how a strong vertical wind shear relates to thunderstorms?
A. It intensifies the severity of thunderstorms. B. It initiates the formation of severe thunderstorms. C. It inhibits the formation of severe thunderstorms. D. It reduces the severity of thunderstorms.
The m values in polylines represent:
A. the number of points that make up a line segment B. the linear measure along a route C. the symbol of a route D. the length of a line segment
The reflective quality of a surface is known as its
A) absorption. B) specific heat. C) scattering. D) conduction. E) albedo.
Often before sunrise on a clear, calm, cold morning, ice (frost) can be seen on the tops of parked cars, even when the air temperature is above freezing because the tops of cars are cooling by a loss of
a. ?conduction. b. ?convection. c. ?latent heat. d. ?radiation. e. ?condensation.