Although many rangeland managers call for sharply reducing the number of grazing livestock to reduce overgrazing, Allen Savory recommends ____.
A. moving small herds of cattle to fresh range frequently
B. reseeding pasture of rangeland frequently
C. exposing a small amount of land to a large herd of cattle for a few days
D. frequently plowing rangeland to stimulate grass growth
E. interspersing cattle range with other species of grazers, like sheep
Answer: C
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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.
Beaches are
A) places along the coast where sediment is in motion. B) permanent coastal features. C) places where sediment is stable and unchanging. D) always composed of sand.
The continental block shown in this figure has a transform boundary, a reverse fault, and a continental rift. What type of activity could cause an earthquake here?
A. movement of magma near the rift B. strike-slip faulting C. reverse faulting D. normal faulting E. All of these choices are correct.
How much has CO2 varied in the EPICA record? What were the highest and lowest values? What was the range of CO2 values?
What will be an ideal response?