Language spread can be a reflection of which spatial diffusion process?

A. relocation diffusion
B. hierarchical diffusion
C. expansion diffusion
D. all of these
E. none of these


Answer: D

Environmental & Atmospheric Sciences

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gamma ultraviolet radio infrared

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Zooplankton are always ________.

A. animals B. heterotrophs C. multicellular D. All of these are correct. E. None of these is correct.

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What caused the glacial expansion that occurred in the 18th to early 19th century?

A) efforts to prevent global warming B) "The Little Ice Age" C) a decrease in the use of fossil fuels D) a decrease in sea level

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Fill in the blank with correct word.

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