Which of the following acts as a barrier to diffusion of ideas and/or cultural traits?

A. man-made laws
B. the earth's topography
C. distance
D. all of these


Answer: D

Environmental & Atmospheric Sciences

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Which of the following statements is true?

A. In a commensalistic relationship both partners benefit equally B. In a commensalistic relationship one partner benefits and the other is adversely affected C. In a mutualistic relationship one partner benefits and the other is neither harmed nor helped D. In a parasitic relationship both partners are adversely affected E. In a mutualistic relationship both partners benefit from the relationship

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Where on the map is the center of high pressure influencing ocean currents with clockwise circulation?

A. A B. B C. C D. D

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Oak, hickory, maple, aspen, and birch are most associated with the ____.

A. temperate deciduous forest B. tropical rain forest C. boreal forest D. temperate rain forest E. temperate evergreen forest

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