Besides iron, banded iron formations contain
A) quartz
B) calcite
C) magnetite
D) chert
E) shale
D
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The primary factor in von Thünen's model for choosing commercial farm products is
A) land price. B) market location. C) climate. D) soil character. E) labor cost.
The occurrence of a sundog tells you that
A) the ice crystals are columnar in shape and are horizontally-oriented as they fall. B) the ice crystals are platelike in shape and are horizontally-oriented as they fall. C) the ice crystals are columnar in shape and are tumbling while they fall. D) the ice crystals are platelike in shape and are tumbling while they fall.
Dunes that form when vegetation cover is broken by deflation and the dune tips point upwind are:a
longitudinal. b. transverse. c. barchan. d. parabolic. e. none of the above
The Paseo de la Reforma in Mexico City would be identified by the Griffin-Ford model as
A) the market. B) a suburban settlement. C) a zone of maturity. D) a spine. E) a zone of in situ accretion.