According to Ester Boserup, what usually accompanied the transition from one form of agriculture to another?
A) increased population density
B) improved tools
C) improved transportation
D) more labor specialization
E) all of the above
E
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Explain how the American climatologist, C. Warren Thornthwaite, devised a classification system to correct some of the deficiencies in the Köppen classification system
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About 88 percent of geologic time is represented by the time span called the ________. Precambrian Mesozoic Paleozoic Phanerozoic
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Which statement is true regarding the coast of southwestern Florida?
A) They were formed during an ice age period. B) They are an example of an erosional coast. C) They are an example of a coast formed by biological activity. D) They are completely below sea level.
Which processes must occur in a raindrop to produce a rainbow?
a. refraction, reflection, and dispersion of sunlight b. refraction, reflection, and scattering of sunlight c. reflection, scattering, and dispersion of sunlight d. transmission, reflection, and dispersion of sunlight e. refraction, transmission, and scattering of sunlight