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

Environmental & Atmospheric Sciences

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Urban planning involves all the following disciplines except ________

A) ecology B) sociology C) engineering D) history E) architecture

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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.

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences