Current ethanol production as a fuel does not significantly reduce greenhouse gas emissions because
A) of the amount of fossil fuels required to produce the corn used in the process.
B) the process of fermentation produces a tremendous amount of carbon dioxide.
C) the process of fermentation produces a tremendous amount of methane.
D) burning ethanol or gasoline contributes the same net amount of carbon dioxide in the atmosphere.
A
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A cultural region is, by definition, contiguous with no discontinuous sections
Indicate whether this statement is true or false.
What kind of fans occur when sediment that the stream can no longer carry is deposited in a fan-shaped pattern?
A) loess B) alluvial C) rills D) fluvium
Briefly explain how the geological conditions that produced and deposited loess have determined the
sites of the world's major grain belts. What will be an ideal response?
Which of the following climatic controls can be considered the most important?
A) Longitude B) Latitude C) Elevation D) Distribution of land and water E) Storms