Geographers use ________ to represent market areas because of their geometric properties compared with those of circles and squares
A) octagons
B) hexagons
C) pentagons
D) triangles
E) heptagon
Answer: B
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Cyclonic flow means ____ in either the Northern or Southern Hemisphere
A) clockwise wind flow B) counterclockwise flow C) circulation around a low pressure center D) circulation around a high pressure center
The resistance of a mineral to scratching or abrasion is known as ________
A) luster B) cleavage C) streak D) hardness
Which of the following is true of the Salk vaccine against the polio virus?
A) It contains a virus which has been inactivated by treatment with formaldehyde. B) It contains a mutated form of the virus which is temperature sensitive. C) It contains a very small amount of the natural virus. D) None of the above is correct.
The Mid-Atlantic Ridge is an example of a ________
A) convergent plate boundary (continent-continent) B) convergent plate boundary (continent-oceanic) C) convergent plate boundary (oceanic-oceanic) D) divergent plate boundary E) transform fault boundary