A four-field rotation system is used in which type of agriculture?

A) intensive subsistence agriculture
B) swidden
C) extensive subsistence agriculture
D) mixed crop and livestock farming agriculture
E) all of the above


D

Environmental & Atmospheric Sciences

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A) 50 B) 100 C) 200 D) 500

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Powerfully symbolic landmarks like the Eiffel Tower, the Empire State Building, a distinctive opera house or even a strategically placed ferris wheel (!) are most likely to represent a(n)

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