What are pastoralists?

A) herders
B) farmers
C) traveling merchants
D) missionaries
E) none of the above


Answer: A

Environmental & Atmospheric Sciences

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Volcanic eruptions are good examples of punctuated equilibrium

Indicate whether the statement is true or false

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Green building approaches do not reduce the ecology footprint of buildings through use of ________

A) infill sites B) materials with low embodied energy C) building orientation to take advantage of solar radiation D) LEED certification E) greenfield sites

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The soil horizon containing only organic material is the

A. A horizon B. B horizon C. C horizon D. O horizon E. E horizon

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What best describes the difference between solar thermal and photovoltaic systems?

A. solar thermal operates only during the daytime B. photovoltaic  generates electricity only C. solar thermal works better in warm climates D. photovoltaic use electricity and can operate at night E. photovoltaic generates both heat and electricity

Environmental & Atmospheric Sciences