The historic diffusion of HIV/AIDS in the United States is an example of which type of diffusion?
A) contagious
B) hierarchical
C) relocation
D) stimulus
E) geospatial
Answer: C
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Which well is least likely to need pumping?
A) a well that reaches water very near the surface at an unconfined sand and gravel aquifer B) a well that is drilled below a confining shale layer to a confined sandstone aquifer C) a well that is drilled deep in an unconfined sandstone aquifer D) any well in a limestone aquifer
Urban planning involves all the following disciplines except ________
A) ecology B) sociology C) engineering D) history E) architecture
Of all the following processes which one increases the salinity of water?
A) Precipitation B) Runoff C) Icebergs melting D) Evaporation E) Sea ice melting
The phylogenetic species concept holds that the definition of a species should be
A. based on branching relationships among species. B. based on reproductive compatibility. C. based on evolutionary relationships. D. variable depending on the type of organism.